Debian Bug Tracking System scrisse in data 03/07/2008 16:30:
[...] that mm trouble has been fixed in newer linux images. etch + half kernelhave the upstream fix. as the oops is quite rare and fix hasn't been clearly identified it is recommeded to upgrade to etch + half kernel-> http://wiki.debian.org/EtchAndAHalf
In effect EtchAndHalf seems to have solved the problem... Thank you very much Piviul