weird problem - ibook power management

[Nirmal Govind <nirmalg@psu.edu>]

Hi.. I'm experiencing a weird problem.. usually when I close the lid of my 
ibook (w/ benh10 kernel and the power management enabled in the kernel), the 
computer goes into standby.. and when I open the lid, it comes back up.. 
sometimes (and I can't seem to identify a pattern) after the ibook is closed 
and it's gone into standby and I've left it in my bag (so its on battery) for 
a while, when I take it out, the white flashing light has disappeared, when I 
open the display, it doesn't come back up but I know it hasn't shutdown cos 
the caps lock and num lock lights work..  and pressing Fn key doesn't bring 
it back up... today, after it came back from standby when I opened the lid, I 
reconnected the power cable and then closed the lid after a few seconds and 
the problem I just described reoccurred.. I've been basically shutting the 
computer down and then restarting to "solve" the problem.. any ideas on what 
might be happening and how to solve it?

Thanks,
nirmal