Anyone seeing Firefox slow down with Gmail and or Google Sync?
I've been using Firefox 2.x (latest) for a couple of months now and I often find that typing in forms or gmail slows down to an unacceptable crawl after a while. Has anyone else seen this? It's either a memory leak or a javascript performance issue. Does anyone know if it's Google Sync or Gmail?
For now, I'm trying running Gmail in Safari and do my other work in Firefox. I'd like to see the Firefox and Google folks clean this up...soon.
Technorati Tags: firefox, gmail, google sync

i got the same problem
Posted by: greenko | Apr 01, 2007 at 05:16 PM
I have the same problem...if You use rich text editor, the panel is rendered very-very slowly :o( I have returned to the IE 7. I prefer Firefox in development because of extensions like webdeveloper, but I prefer opera or IE for a common browsing.
Posted by: Gabriel Forro | Apr 04, 2007 at 12:50 PM
I am experience the same issue. All of a sudden this week my Firefox sucked up 960 MB of RAM!
I turned off Google Sync and now the browser is fine. What is weird I have been using Sync for months now without any issues, UNTIL the latest Microsoft XP update.
I blame Microsoft
Corey
Posted by: Corey Stroeder | Apr 13, 2007 at 09:38 AM
I started seeing this last week. On my MacBook (2GHz, 1G RAM) Firefox would display the spinning wheel and then I'd get a "This script is taking a long time" message. The CPU fan would start blowing like crazy and I would end up having to kill Firefox. I have switched back to Safari but I miss my Google Toolbar.
Posted by: Khurt Williams | Apr 29, 2007 at 08:00 AM
I have seen this this week on one of my customers machines. I have tried updating Java , Flash, OpenDNS, and more.
Its even slow in IE7. I also noticed that Youtube is slow on this xp machine with FF2003. So I dont know what to make of it but its got something to do with google/gmail/youtube that they all share in common for certain XP machine configs. But what?
Posted by: we wa | May 01, 2007 at 07:07 PM
I've seen this too on my Windows machine. I disabled all of my extensions, thinking that might be it. At one point, FF was using something like 800MB of RAM, which is crazy! I don't seem to have this issue on my MacBook, but I generally use Safari instead of FF on my Mac since Safari tends to be a bit faster.
Posted by: Bill | May 08, 2007 at 12:42 PM
I have same problem.
Versions
========
Firefox 2.0.0.3
Google Maps (no version)
GMAIL (no version)
It's slowed to a crawl, blows cpu fan, on HP laptop running XP SP2.
I have no idea what changed.
If anyone finds the solution please post it here.
Posted by: Brett Wolmarans | May 23, 2007 at 05:11 PM
This happened to me too. Disabling Google Browser Sync seems to have fixed it.
Posted by: ma9913 | May 29, 2007 at 06:52 PM
After todays (endless ) XP update from MS (june 13) gmail has become unusable for writing email and can barely open new mail. CPU usage pops up and down to 100% then freezes. Happened right after the update. De-fragmented and boot up but problem will not resolve. DId MS do this on purpose? everything else works as per normal. I have a gig of RAM and can't even compose an email in gmail.
Posted by: robert wilson | Jun 13, 2007 at 10:04 PM
Seems I`ve got the same Google browser sync problem. Slows down to a crawl and Firefox takes almost 100% of processor!! Disabling sync does a temporary cure. Is there a fix, as I run two PC`s side by side - hence the sync!!
Posted by: David | Jun 21, 2007 at 09:23 AM
Hi,
Got the same problem. I'm using firefox for browsing and developping. After a few hours it's start to slow down. When i refresh a page it load it display it after 2 second freeze during 2 or 3s (no roll over, flash anim stopped...) then get back to normal but the focus on input is slow. Had to kill it to get back to normal speed.
R.
Posted by: Regis | Jul 05, 2007 at 12:39 AM
The same problem here. I am using a Celeron 3.33 Ghz and 1 Gb DDR RAM.
Login into Gmail freezes the computer for about 30 to 45 seconds. Leaving Gmail, closing a tab opening an email and anything would freeze the computer.
Since the last update of Firefox 2.0.0.6, closing any tabs freezes the browser for 10 to 20 seconds.
I am leaving for Safari or Maxthon right now.
Posted by: A, | Aug 03, 2007 at 05:35 PM
Right, Since the last update of Firefox 2.0.0.6, closing any tabs freezes the browser for 10 to 20 seconds!
Gmail hangs, Google Maps hangs, Firefox crash on both Windows Vista and XP with all updates.
F**K FIREFOX DEVELOPERS AND YOUR SHIT BROWSER!
Posted by: freezes | Aug 14, 2007 at 09:19 AM
Don't rag on Mozilla, Firfox rocks... this temporary bug doesn't.
Posted by: That Guy | Aug 17, 2007 at 08:05 PM
Same here, google mail has become unusably slow,
Posted by: EMRG | Aug 28, 2007 at 10:14 AM
I've just uninstalled the latest JAVA update 2 and it is back to normal :)
Posted by: jack | Sep 07, 2007 at 05:04 AM
In the meanwhile I'm running Gmail in a MSIE tab inside FF, it works as usual.
Posted by: Juan Lanus | Sep 09, 2007 at 12:39 PM
September 10th, 2007
If you are googling this for your gmail (especially with chat) being very slow and eating up 99% of your CPU with FireFox 2.0.0.6 (newest as of 9/10/07) I have found the solution (for myself at least)!!!
Another weird symptom I was getting was that the emoticons weren't being displayed properly, and there were some other visual artifacts. Unfortunately, the problem lies with one of my favorite extensions: Image Zoom.
If your problems seem like mine, try disabling Image Zoom: Click Tools -> Add-Ons -> Image Zoom -> Disable, then close and restart Firefox.
Click a chat window, make an emoticon or two, and it should be fixed. If this doesn't fix it for you, but you are having similar problems, do what I did and find it manually.
First of all, see if it is an add-on that is causing your problems. Start Firefox in safe mode by going to Start -> Run (or by hitting WindowsKey+R) and enter the command: "firefox -safe-mode" and just click "Continue to Safe Mode" without checking any of the boxes. Go to www.gmail.com and login, and test it out. If the problems disappear, one of your extensions is messing it up.
To find which one, start Firefox in regular mode, then disable about half of your extensions. Restart Firefox and try gmail again. If it is working correctly, try enabling each extension, restarting firefox, and trying again, until you get the problem again; the last one you enabled is the problem extension. On the other hand, if after disabling half it does not work, keep disabling one at a time (restarting Firefox after each enable/disable) until it does work.
Posted by: Matt L | Sep 10, 2007 at 03:39 PM
I confirm the link between the extension Image Zoom 0.3 and the freeze/slowdown of gmail.
See thread on Image Zoom forum :
http://imagezoom.yellowgorilla.net/forums/viewtopic.php?pid=1367#p1367
Posted by: Morphee | Sep 15, 2007 at 06:59 AM
i confirm the imagezoom relationship here. how bizarre is that?
Posted by: timesheetboy | Sep 17, 2007 at 09:22 AM
ColorZilla was my culprit. I disabled it & Gmail seems MUCH faster.
It's a pity - I love that extension.
:(
Posted by: arti | Oct 01, 2007 at 09:43 AM
I have exactly the same problem on the Leopard.
Every operation took for ever, typing text in a text box, scrolling the browser window, moving a firefox window (or child window) around the screen.
I've just uninstalled google browser sync, and firefox is usable again. Shame, because I really liked google browser sync. I'm just relieved it isn't firefox that is broke though!
Posted by: Bry | Feb 14, 2008 at 11:54 PM
Same issue for me using Firefox on Ubuntu linux,
Google javascript slows down after a while,
cpu maxed out at full, and laptop fans get cranked.
I end up having to kill it off and restart every 30 minutes or so.
Also, many times the cursor is invisible in a gmail compose message session.
I also have similar slowdowns in Google Apps..
I do have browser sync on, I'll try disabling it for a while to see what happens.
Posted by: Gord Wait | Mar 02, 2008 at 09:21 PM
I have had similiar problems. After weeks of trial and error, I noticed, in my case that the Skype toolbar was the reason for all the freezing. Once i uninstalled the Skype toolbar... no more problems. By the way, I do not mean uninstall Skype, if you are a user of Skype, but the toolbar only... the one that is an added option to enhance IE.
Posted by: nilopolitano | Mar 20, 2008 at 03:26 PM
Just found this via a Google search and thought I'd report my problem and solution, as well.
Firebug slowed down Gmail character entry in the Compose subwindow (not even rich text) to the point that every third sentence it would hijack 90% CPU on both cores and I'd be halfway into the paragraph before it finally typed out what I'd already entered.
Disabling Firebug, iMacros, and Selenium IDE made it usable again, but I'm sure it was just Firebug (happened before).
It has, however, been the Facebook Boost Toolbar in a lot of instances before, especially if an instance of the Facebook homepage is open and sitting in the background tabs somewhere.
Posted by: Michael | Apr 11, 2008 at 09:19 AM