T42 exits standby with lid still closed, RANDOMLY

[etherealtml]

I recently noticed that my T42 seems to arbitrarily wake itself from standby mode. My thinkpad will be asleep for several hours- with the lid closed- when suddenly, for no apparent reason, I can see the suspend light turn off, and then the cpu fan and hdd start spinning. After running for about 15-30 seconds, my computer again resumes standby. Mind you, the entire time the lid was closed, and I wasn't touching the thinkpad at all or anything like that.

Would really like some help diagnosing this problem. Any ideas? TYIA

[dvorak]

As weird as it is, I've experienced the same behavior, yesterday evening was my the latest. Brought the Thinkpad to my kitchen table, it sat there for a while too, it had been on standby for a couple of hours, and then out of the blue it came out of standby, I opened the lid, nothing, blank, a few seconds later the moon was lit and HDD stopped spinning.
Peculiar, I have disabled waking up on timer, so it won't hibernate itself after going to standby, but still sometimes this thing happens.