User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9a3pre) Gecko/20070307 Minefield/3.0a3pre Firefox Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9a3pre) Gecko/20070307 Minefield/3.0a3pre Firefox Starting with today's nightly: 2007030804 every 20-30 minutes I get a crash in xpcom_core.dll Talkbacks: TB30044217Q TB30043080Y TB30042111H TB30041104Y Top three seem to point to canonicalize Reproducible: Always Steps to Reproduce: 1. 2. 3. Expected Results: No crash System: Vista Home Premium 1.4Ghz AMD 1gig RAM, ATI 9500Pro video card. Does not happen with the 2007030715 hourly build. Thus, it had to have regressed sometime after that and today's nightly build.

Also occurs in SafeMode and a new Profile with no extensions.

Bonsai for the range in question: http://bonsai.mozilla.org/cvsquery.cgi?treeid=default&module=PhoenixTinderbox&branch=HEAD&branchtype=match&dir=&file=&filetype=match&who=&whotype=match&sortby=Date&hours=2&date=explicit&mindate=2007-03-07+14&maxdate=2007-03-08+05&cvsroot=%2Fcvsroot

Three are: Incident ID: 30042111 Stack Signature canonicalize 8d26db28 Product ID FirefoxTrunk Build ID 2007030804 Trigger Time 2007-03-08 07:23:45.0 Platform Win32 Operating System Windows NT 6.0 build 6000 Module xpcom_core.dll + (00030d2d) URL visited User Comments crash at accuweather gadget page Since Last Crash 1979 sec Total Uptime 3996 sec Trigger Reason Access violation Source File, Line No. e:\builds\tinderbox\fx-trunk\winnt_5.2_depend\mozilla\xpcom\base\nscyclecollector.cpp, line 630 Stack Trace canonicalize [mozilla/xpcom/base/nscyclecollector.cpp, line 630] GraphWalker::NoteXPCOMChild [mozilla/xpcom/base/nscyclecollector.cpp, line 641] ControlTraverser [mozilla/content/html/content/src/nshtmlformelement.cpp, line 570] nsBaseHashtable<nsCStringHashKey,nsAutoPtr<nsPasswordManager::SignonHashEntry>,nsPasswordManager::SignonHashEntry *>::EnumerateRead [mozilla/dist/include/xpcom/nsbasehashtable.h, line 188] nsHTMLFormElement::cycleCollection::Traverse [mozilla/content/html/content/src/nshtmlformelement.cpp, line 578] One is Incident ID: 30041104 Stack Signature xpcom_core.dll + 0x30d2d (0x602d0d2d) 1855bbe0 Product ID FirefoxTrunk Build ID 2007030804 Trigger Time 2007-03-08 06:49:28.0 Platform Win32 Operating System Windows NT 6.0 build 6000 Module xpcom_core.dll + (00030d2d) URL visited User Comments Since Last Crash 2017 sec Total Uptime 2017 sec Trigger Reason Access violation Source File, Line No. N/A Stack Trace xpcom_core.dll + 0x30d2d (0x602d0d2d) xpcom_core.dll + 0x31994 (0x602d1994) firefox.exe + 0x38c8d5 (0x0078c8d5) firefox.exe + 0x491994 (0x00891994) firefox.exe + 0x38d741 (0x0078d741)

Looks like this one: