I ran into a server 500 error after rsync'ing my app over to another server (Centos > Debian). Everyhing was great, except after pawtucket intially working, it would fail after about a half hour. Tracked it down to a php timeout in utilityHelper, variable $dir = tmp. Used caUtils clear-caches, no luck. Tried again, no luck-tmp still had files. Finally deleted the contents of tmp manually, and all is good again.
Has anyone else run into a similar problem with caUtils? Frustrating, but at least I know how to clear it now.