CentOS virt - Jan 2009 - Areca 1220 crashing box

Has anyone experienced any problems with Areca raid cards specifically  
the 1220 causing kernels to lock up?
We are running  2.6.18-92.1.22.el5xen on 64bit. We have "areca_cli rsf  
info" run once an hour from cron to check
for raid raid issues.  Having this running seems to cause the box to  
lock up. Whats weird is I can't seem to make it
lock up while running that command by hand.
If anyone has any insight on this it would be most appreciated.


Thanks,
  William