For some reason, about every other day, my bb completely stops alerting. It is set to ring, but stops ringing for phone, email, bbm, gtalk, sms....everything. A battery pull seems to solve the problem temporarily, but it is getting irritating. Any ideas? Oh, and I am back on a curve, gave up my storm......ack!
This has happened to me before, and it was because of an app I downloaded. It might not be the same with you, but that was reason why mine was like that. Try to uninstall some apps around the time that this started happening. Then add them on one by one until you find which one it was. Again, this worked for me but I don't know if you will get the same result.