root@fs:~# vserver mail start
/usr/local/lib/util-vserver/functions: line 497:  4357 Segmentation fault      $_VSERVER_INFO - FEATURE namespace
/usr/local/lib/util-vserver/functions: line 900:  4377 Segmentation fault      $_VSERVER_INFO - FEATURE vshelper
/usr/local/lib/util-vserver/vserver.functions: line 1023:  4378 Segmentation fault      $_VSERVER_INFO - VERIFYCAP
capabilities are not enabled in kernel-setup


Failed to start vserver 'mail'