I tested the kernel from Ubuntu git containing the fix:
http://zeus2.kernel.org/git/?p=linux/kernel/git/bcollins/ubuntu-2.6.git;a=commit;h=29f0b9969512eb7b312b0760d7bea7e652e8764e
Fix confirmed: problem doesn't appear any more.
I tested the kernel from Ubuntu git containing the fix:
http:// zeus2.kernel. org/git/ ?p=linux/ kernel/ git/bcollins/ ubuntu- 2.6.git; a=commit; h=29f0b9969512e b7b312b0760d7be a7e652e8764e
Fix confirmed: problem doesn't appear any more.