Steps to Reproduce: 1. Get yourself several similar URLs of history 2. ??? 3. Search for those URLs in the sidebar and delete them there Unfortunately, this isn't 100% reproducible (hence the missing step 2). As per the crash reports (see URL), this is a regression from between April 22 and April 23.

I think you meant for this to be in Firefox::Places. We need better STR here before we can consider blocking.

I got this today, but again is not reproducible on demand. But I had my normal profile open (90 day history), History > Show All History, typed a term into the Search bar (10s of results returned), gave focus to results area, CTRL+A to select all the results, pressed Delete to remove results, and crash! Signature mozStorageTransaction::~mozStorageTransaction() UUID 0b4ab366-160f-11dd-b862-001cc45a2c28 Time 2008-04-29 10:08:35-07:00 Uptime 2755 Product Firefox Version 3.0pre Build ID 2008042906 OS Windows NT OS Version 5.1.2600 Service Pack 2 CPU x86 CPU Info AuthenticAMD family 6 model 8 stepping 1 Crash Reason EXCEPTION_ACCESS_VIOLATION Crash Address 0x3a000039 Comments opened history in places, searched for a term, CTRL+A to select all, hit DEL to delete them, crash Frame Module Signature [Expand] Source 0 xul.dll mozStorageTransaction::~mozStorageTransaction mozStorageHelper.h:81 1 xul.dll mozStorageTransaction::`scalar deleting destructor' 2 xul.dll nsDownloadManager::OnEndUpdateBatch mozilla/toolkit/components/downloads/src/nsDownloadManager.cpp:1807 3 xul.dll nsNavHistory::EndUpdateBatch mozilla/toolkit/components/places/src/nsNavHistory.cpp:3576 4 xul.dll nsNavHistory::RemovePages mozilla/toolkit/components/places/src/nsNavHistory.cpp:3775 5 xul.dll NS_InvokeByIndex_P mozilla/xpcom/reflect/xptcall/src/md/win32/xptcinvoke.cpp:101 6 xul.dll XPCWrappedNative::CallMethod mozilla/js/src/xpconnect/src/xpcwrappednative.cpp:2369 Signature nsCOMPtr_base::~nsCOMPtr_base() UUID 5d53b3cc-1611-11dd-aba9-001cc45a2ce4 Time 2008-04-29 10:25:53-07:00 Uptime 116 Product Firefox Version 3.0pre Build ID 2008042906 OS Windows NT OS Version 5.1.2600 Service Pack 2 CPU x86 CPU Info AuthenticAMD family 6 model 8 stepping 1 Crash Reason EXCEPTION_ACCESS_VIOLATION Crash Address 0x182 Comments Frame Module Signature [Expand] Source 0 xul.dll nsCOMPtr_base::~nsCOMPtr_base nsCOMPtr.cpp:81 1 xul.dll mozStorageTransaction::`scalar deleting destructor' 2 xul.dll nsDownloadManager::OnEndUpdateBatch mozilla/toolkit/components/downloads/src/nsDownloadManager.cpp:1807 3 xul.dll nsNavHistory::EndUpdateBatch mozilla/toolkit/components/places/src/nsNavHistory.cpp:3576 4 xul.dll nsNavHistory::RemovePages mozilla/toolkit/components/places/src/nsNavHistory.cpp:3775 5 xul.dll NS_InvokeByIndex_P mozilla/xpcom/reflect/xptcall/src/md/win32/xptcinvoke.cpp:101 6 xul.dll XPCWrappedNative::CallMethod mozilla/js/src/xpconnect/src/xpcwrappednative.cpp:2369 From bugzilla URL, no crashes in the 20080422 build, crashes in the 20080423 build. - http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2008-04-22-07-trunk/ - http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2008-04-23-05-trunk/ Checkins to module PhoenixTinderbox between 2008-04-21 23:00 and 2008-04-22 23:00 : 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=2008-04-22-06&maxdate=2008-04-23-06&cvsroot=%2Fcvsroot

Er, range should have been Checkins to module PhoenixTinderbox between 2008-04-22 06:00 and 2008-04-23 06:00 : 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=2008-04-22+06&maxdate=2008-04-23+06&cvsroot=%2Fcvsroot

Dupe of bug 431597 which was fixed by bug 431346.

Er. well.. I suppose this says history sidebar.