Comment 33 for bug 133786

I solved the problem by installing a custom kernel.org 2.6.23.8 kernel. Configured with ubuntu .22 default config as basis but disabled all suspicious new stuff, such as virtualization and tickless. No more XFS filesystem corruption and no more debsums corruption even after apt updates and new installs. I'd say there's a bug in ubuntu's kernel, either in the xfs fs or in something related to cache flushes.