Thank you for posting this bug.
This is part of a known issue, fixed by updating to Lucid host. Marking
fixed.
** Changed in: virtualbox-ose (Ubuntu)
Status: New => Fix Released
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vm's very slow once every n boots
https://bugs.launchpad.net/bugs/505220
You received this bug notification
I experienced this issue on my Gentoo system. According to
http://vbox.innotek.de/pipermail/vbox-trac/2007-July/105390.html , it
may be due to a system clock time slip.
And in fact, ntpd was adjusting the time slightly. After I killed ntpd
and restarted the guest, everything worked fine again. May
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/37651243/Dependencies.txt
** Attachment added: "LsMod.txt"
http://launchpadlibrarian.net/37651244/LsMod.txt
** Attachment added: "VirtualBoxOse.ModInfo.txt"
http://launchpadlibrarian.net/37651245/VirtualBoxOse.ModInfo