There is a serious bug in Mac OS X / AppKit that can cause crashes in
any application that uses animations in background threads, as provided
by default by for example NSProgressIndicator, the default button cell
in a window, et.c.
The purpose of this message is to encourage all of you to file bug
reports on this problem if you ever see it.
My bug reports on this problem has been marked as "duplicates" (the one
I'm tracking now is case 3858351), but as bug reports works as "votes"
when it comes to setting the priorities for Apples engineering efforts,
I firmly believe that it it would make a lot of sense for you to file
new bug reports for this crash.
What I think Apple would need the most is a reproducible case. I have
unfortunately not been able to provide one.
I see this crash bug a lot in Xcode, but I have also seen it in
ProjecBuilder, Mail, and our customers are reporting that it happens in
the application that our company is developing.
You might not always see all symptoms at the same time, especially not
the console log.
I think that you need a multi-CPU machine to reproduce this problem,
but I'm not quite sure.
Our application, PB, Xcode and Mail all share the characteristics of
having a lot of background threads that funnel data into the main
thread. That's probably also related to this problem.
The first time I reported this crash to Apple was in October 2002 so I
would really like to see it fixed soon. I hope it's not too late to
hope for a fix in Tiger!
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