I’ve been running Asterisk 1.2.16 on a debian system now for 8 months with no problems. The phones are Linksys SPA942 4 line phones.
I had to shutdown the server to move it, and now the MWI lights on the phones turn on for 5 seconds and clears. The mailbox says that it has new messages waiting when I log into the mailbox. No updates were applied, no changes of any kind…