I can confirm this on Oneiric with latest updates. Bug occurs on system with long uptime, because of memory fragmentation.
Problem is described in details here: http://lwn.net/Articles/467328/ My solution was to disable synchronous memory defragmentation with: echo never > /sys/kernel/mm/transparent_hugepage/defrag or less restrictive: echo madvise > /sys/kernel/mm/transparent_hugepage/defrag This bug is found in other distributions, like Arch: https://bbs.archlinux.org/viewtopic.php?id=112846&p=4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/837070 Title: Natty almost freezes on USB transfers / slow transfers / Xorg freeze / caching lunacy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/837070/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
