Comment 16 for bug 435990

@drew: If you read the rest of the bug description you'll see this isn't about a crash. So a backtrace is not possible and an strace would run into the gigabytes.

The flash/java versions are not particularly relevant because this bug dates from at least release 9.04 so the versions have changes several times without affecting the bug. But for completeness:
openjdk-6-jre 6b18-1.8.1-0ubuntu1
flashplugin-installer 10.1.82.76ubuntu0.10.04.2

The extensions in use have already been listed above. For completeness here they are again: flashblock, adblock plus, downloadhelper.

"This will greatly aid us in tracking down your problem." Good luck with that. I don't think this bug will be understood until we have some way of seeing where the CPU cycles are going. A useful step forward would be to see if the cpu being hogged in one of the extensions or in firefox, and if it's in firefox what part. Suggestions to achieve that would be helpful.