[CentOS] xen save/restore causes cron to hang

i haven't found anything online to talk about this, so maybe i've got 
something odd going on here.  i have my xen set up to save/restore on dom0 
reboot.  almost everything works fine, but cron on the guest os'es 
(everything is centos 5 x86_64) stop processing jobs.  i'm guessing it is 
missing an alarm or something like that.  anyone else see this?