Received the following complaint: "== I was talking about working set memory on Twitter. Firefox 4 is using 774MB tonight, with no more heavy use than I put Firefox 3 under and never saw this kind of usage after half a day. http://img850.imageshack.us/img850/9395/ff4memory.png That's after running since 8am, with no more than 5 tabs running at a time. Mostly from Newsvine.com (regular posting and interaction), Gmail (as an "app" tab), and a few other transient tabs (HuffPost, NYTimes, Google News, etc). If you'd like more detailed information, let me know what you need and I'll get it. ==" User is Paul Tenny email@example.com Some additional info regarding his platform: "== OS: Windows XP, Service Pack 2. Extensions enabled: Adblock Plus 1.3.3 Greasemonkey 0.9.1 Java Quick Starter 1.0 Mozilla Archive FOrmat 1.0b3.0 Pearl Crescent Page Saver Basic 2.6.1 Sothink Web Video Downloader for Firefox 6.1 YSlow 2.1.0 Extensions disabled (some because they aren't compatible with Firefox 4, some because I don't use them): bit.ly preview 1.272 Digg Toolbar for Firefox 2.0.2 Firebug 1.6.2 Google Desktop Indexer 5.9.0911 OneClick YouTube Downloader 1.0.4 RECAP 0.8.1 SearchStatus 1.36 TVU Web Player 2,5,3,1 Plugins: Adobe Acrobat 188.8.131.52 Google Earth Plugin 184.108.40.206 Google Talk Plugin 220.127.116.11 Google Talk Plugin Video Accelerator 0.1.43.4 Google Update 18.104.22.168 Hulu Desktop 0.9.14.1 Java Deployment Toolkit 22.214.171.124 Java(TM) Platform SE 6 U21 126.96.36.199 Microsoft(R) DRM 188.8.131.5250 ("DRM Store Netscape Plugin", and "DRM Netscape Network Object") Octoshape Streaming Services 20000.9.928.0 Shockwave Flash 10.2.152.32 Silverlight Plug-In 4.0.50917.0 TVU Web Player for Firefox 184.108.40.206 Veetle TV Core 0.9.18.0 Veetle TV Player 0.9.18.0 Windows Media Player Plug-in Dynamic Link Library 220.127.116.119 The current profile is not new, it was created when I built this machine on 2009-06-26. Whatever the latest version of Firefox 3 was on that date, that's the version that created this profile. Here's the output of about:memory: Overview Memory mapped: 488,636,416 Memory in use: 364,301,300 Other Information Description Value malloc/allocated 364,305,148 malloc/mapped 488,636,416 malloc/committed 425,103,360 malloc/dirty 1,499,136 win32/privatebytes 460,718,080 win32/workingset 472,268,800 js/gc-heap 126,877,696 js/string-data 7,026,362 js/mjit-code 9,228,952 storage/sqlite/pagecache 32,058,912 storage/sqlite/other 1,667,864 gfx/d2d/surfacecache 0 gfx/d2d/surfacevram 0 gfx/surface/win 322,091,269 images/chrome/used/raw 0 images/chrome/used/uncompressed 533,711 images/chrome/unused/raw 0 images/chrome/unused/uncompressed 0 images/content/used/raw 5,457,727 images/content/used/uncompressed 712,946 images/content/unused/raw 11,399 images/content/unused/uncompressed 20,176 layout/al l8,023,281 layout/bidi0gfx/surface/image 5,904 shmem/allocated 1,413,120 shmem/mapped 1,413,120 content/canvas/2d_pixel_bytes 876,060 It's lower than the 700MB+ that it was a few hours ago because I restarted the browser, but it's only been running three hours. If you'd like me to disable any or all of those extensions and see what happens, I'd be happy to. Just let me know. =="
Please ignore the previous comment. It was applied to the wrong bug.