okay today it locked up a bit coming out of standby. I experimented quite a bit with this over the last 2 days and the problems only occur when in resuming from sleep after more than 4 hours or so. if I use sleep for around 4 hours or less it resumes just fine.
the odd thing is that all 3 times it has acted up after coming out of standby it has done it in a completely different way. first time was just infinite reboots, second time the fans just started racing and then today it appear to be fine but the computer itself froze for about 30 seconds.
its driving me nuts worrying about.