[ltp] tp in the cold?

[dim]

Hi,
I'm using linux slackware (kernel 2.6.2) on my thinkpad 570. Where I
live it's now about -5 degrees C. After an hour of being outside (in
the thinkpad case, suspended) my laptop has trouble awakening from
suspend. It just switches the screen on where I can see my desktop but
doesn't react to any keypresses (not even Fn-F4). If I turn it off and
restart it, everything is ok. Is this because of the cold? Has anybody
else experienced anything like this?

Thanks,
dim