reiser4 panic in do_readpage_extent

[Devils-Hawk]

Recently tried switching from 2.6.18 + reiser4-for-2.6.18-r3.patch.gz, 
which works perfectly fine to 2.6.19 + reiser4-for-2.6.19-r3.patch.gz
I also tried 2.6.20 laurent riffard's reiser4-for-2.6.20. The last both 
die somewhere during init when one of the 2 following asserts fails:
extent_file_ops, Line 1160: assert("nikita-2688"),j)
extent_file_ops, Line 1161: assert("vs-1426"),jnode_page(j) == NULL )
fs was fsck'ed with reiser4progs-1.0.5

regards DevH