After significant abuse on several x86 machines, I was finally able to reproduce this with the old libc6 version, but continue to be unable to reproduce with the versions in precise/quantal-proposed. Given that no one's found any regressions with this patch, and the few testers who had deadlocks on the old version couldn't reproduce with the new, I'm marking this verification-done.
After significant abuse on several x86 machines, I was finally able to reproduce this with the old libc6 version, but continue to be unable to reproduce with the versions in precise/ quantal- proposed. Given that no one's found any regressions with this patch, and the few testers who had deadlocks on the old version couldn't reproduce with the new, I'm marking this verification-done.