Comment 5 for bug 773471

Anyway, please test whether it is fixed in the newest kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.39-rc4-natty/ . You need the 2 *i386.deb and the *all.deb. Download and install with sudo dpkg -i ... from a terminal.

Also, I wonder why your attached BootDmesg.txt shows you running Linux version 2.6.35-22-generic. Natty comes with a 2.6.38 kernel. What kernel are you running when the bug appears? Check that e.g. by typing uname -a in a terminal.