I have the same problem. I think the problem started to appear after upgrading to version 2.6.24-15.27 of linux-image-2.6.24-15-generic.So I think it is a kernel bug.
I have the same problem. I think the problem started to appear after upgrading to version 2.6.24-15.27 of linux-image- 2.6.24- 15-generic. So I think it is a kernel bug.