[Asterisk-Users] 1.2.9.1 crashed today

[Matt]

I upgraded to 1.2.9.1 today.  It was working fine until after lunch.
After running since 8am it stopped around 1pm.

People could still call in on our PRI via Zap.   But, you couldn't use
the dialplan (would just sit there)... the queue went to dead air..
and 'show agents' 'show queues' 'zap show channels' did nothing.. just
returned back to the asterisk prompt with no information.

Calls there were up (queue calls) continued to work.

Any thoughts on what might have happened?