Had one freeze when I'd left amirc on.
I hadn't put the reg key in though so don't know if that had something to do with it.
I came back to the machine after a while and the please reg message came up.
Cant remember if trying to get rid of it locked it up or if it was already.

No other freezes apart from that.
I will try running the same proggys as you later and see what happens.