For about the last week of trunk builds, Firefox closes on crash most of the time. Talkback picks it up, but I can get the IDs because I have autoupdate enabled and the next time I start FF it updates and erases the data.

That would be "crashes on close" instead of "close on crash".

http://talkback-public.mozilla.org/talkback/fastfind.jsp?search=2&type=iid&id=9240563 http://talkback-public.mozilla.org/talkback/fastfind.jsp?search=2&type=iid&id=9075970 The problem looks to be in XPCWrappedNativeProto::JSProtoObjectFinalized

There have already been 24 crashes today reported on this stack, and 107 since yesterday. This appears to have started happening beginning with the 20050902 builds.

Looks like bug 307189 *** This bug has been marked as a duplicate of 307189 ***