[chartreuse]

Well can't say I know exactly which one is was without doing a bunch more testing and reboots, but after disabling a bunch more services under chkconfig I managed to get it to stop. Now it's just the occasional disk access which is much more bearable. Turned off unneeded ones like tfxd, sgi_apache, nfsd, autofs, fcagent, sesdaemon, lp, and esd (though I already had that turned off before so that one wasn't the issue surprisingly). Guess I'll find out which one it was if I ever need to re-enable one of them again.

Certainly saving my sanity with the every second repeating disk accesses no longer occuring. The random ones with breaks is much easier on the mind.