I'm also getting this problem on a HP NX9420 laptop. Works fine in 2.6.20.12 but if I boot with 2.6.20-13 I get error messages similar to Pavel Rojtberg and the system becomes unusable due to the constant logging of those messages.
-- Texas Instruments Card reader (8039) not working https://launchpad.net/bugs/53923 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs