It seems that it's related to upstream bug 11434: http://bugzilla.kernel.org/show_bug.cgi?id=11434 I have the same kind of “-22” error. It's supposed to be fixed in 2.6.26.3 (which, if I trust the changelog.Debian.gz, is included in linux-image-2.6.26-1-amd64 2.6.26-5) but it's not fixed on my box. Cheers, -- Yves-Alexis