latest kernels on http://linux-vserver.org requires a version of util-vserver more recent than the last one in portage (pre2910). I've just bumped this package to pre2926 locally, and it works. Reproducible: Always
+1 pretty please ;-) (current upstream is yet at -pre2935) this bump is needed for further bumping sys-kernel/vserver-sources
2935 is in portage now