Shell randomly loses commands

Ever since I started using cpanel, I've noticed that jailshell users occasionally 'lose' their programs while logged in - commands just disappear.. I've lost both vi/vim and nano.. an ls -l /usr/bin/nano produces no such file errors. Logging out and back in fixes the problem.
I haven't dug into this much as I'm not sure how to reproduce this yet, but has anyone else run into this? This is 880 stable 74 on RHEL 3 (rackshack/ev1servers).
Thanks!

 

I've figured out the a second login session from another window (especially important if you're scp'ing files) causes the first to lose their virtual mounts and thus their commands. I've filed a bug report.

cPanel.net Support Ticket Number: 39544