I have been reading on forums of a problem with the Blackjack reminders. For me it is that the reminder doesn't alarm, and the calendar entry itself doesn't even pop up when the time arrives. This happens only once in a while. The only answer I have seen is that you should shut off the Auto date because the towers send funny signals sometimes. I thought I had my answer, but when I checked, I had turned off the autodate a long time ago. Since then, I have missed quite a few reminders. For me the only thing that resolves the issue is to power down the phone. Once I do that, my reminders work properly (for a while). I have OS 5.1.342 (Build 15100.3.0.2) and ROM version 5.1.342.15100, and Activesync 4.2.0. Does anybody have any ideas?