k, i finally took the plunge today and oced my pc.
i have a p4 2GHz - as standard, fsb=100, multiplier=20
very first oc went amazingly - upped the fsb from 100 to 101, no problems to report - all ran smooth @ 2020MHz!
then i went for a couple of increases and tried 2100MHz (fsb=105). booted fine, so i decided to run a test, I ran prime95 "torture test" to max out cpu and ram for a couple of hours, whilst monitoring my temps.
Under full load, i ended up at 50C CPU; after the test, it dropped pretty damn quickly to 40C. now i cant remember what this was before the oc, but do they seem reasonable, or should i be thinking about sorting out the airflow etc before going much further? asus probe has the default critical temp of 60C - does this seem a reasonable level to stick under?