Public bug reported:

Binary package hint: grub-pc

After upgrading from Lucid to Maverick Beta, if my Razer Orochi USB
mouse is connected grub will freeze in early startup (leaving the
"Thinkpad" logo on the screen). Removing the mouse and forcing a power
down will allow grub to boot normally.

This worked fine with the grub from Lucid, only after upgrading to
Maverick beta did this happen.

Long ago I had a similar problem but it was fixed by Thinkpad BIOS. It
could be the new grub has surfaced a new BIOS issue for the Thinkpad
W510.

$ lsb_release -rd
Description:    Ubuntu maverick (development branch)
Release:        10.10

$ apt-cache policy grub-pc
grub-pc:
  Installed: 1.98+20100804-4ubuntu4
  Candidate: 1.98+20100804-4ubuntu4
  Version table:
 *** 1.98+20100804-4ubuntu4 0
        500 http://archive.ubuntu.com/ubuntu/ maverick/main i386 Packages
        100 /var/lib/dpkg/status

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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early grub freeze with USB mouse connected (Thinkpad W510)
https://bugs.launchpad.net/bugs/631208
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