Just got the Captivate Glide, first Android phone for me, and generally pretty happy. BUT, when I first got it, it would randomly shut down on me. When I eventually caught it in the act, the phone was very hot, and it was really running the battery down. Turns out, after much fooling around, that my problem was setting the Calendar synch (with Exchange Activesync) to "ALL". My recommendation is DON'T DO THAT, ever. It seems to send at least the Samsung variant of Android into some kind of infinite loop, where the calendar sync would never finish. Interestingly enough, I could also see the impact of this on my desktop Outlook, where calendar modifications would freeze up, conflicting it would appear with Activesync. Solution is (obviously) to reduce calendar sync to something less than ALL. However, as it turned out, this wasn't enough on its own. Turned out that there was something leftover in the Android cache which continued to cause the calendar sync to run forever. I finally found some info in this forum on how to restart my phone in recovery mode, and to then choose the Wipe Cache option. Once I did that, my phone was back to being fine, and I have had no further issues with it getting hot, burning up the battery, or randomly shutting down. Specific sequence of actions to fix this issue: 1. Delete my account which was syncing to Exchange. 2. Shut down and then restart phone in recovery mode. For the Samsung Captivate Glide, this required pressing the power, volume down and home keys all at the same time. 3. The initial screen which appears gives you a choice of loading a replacement OS (volume up) or entering recovery mode (volume down). Note you have to hold the volume down key for several seconds before the recovery mode menu appears. 4. From the recovery mode menu, choose "Wipe Cache Partition". Some other postings I saw suggested also doing the full wipe/factory reset, but I didn't find this necessary. 5. Once the cache wipe is done, restart the phone. Then re-add the account with the Exchange sync feature, with calendar sync set to 30 days or whatever. 6. Enjoy..... I am an Android newbie, and wouldn't have been able to piece this all together without assistance from existing postings. So wanted to try to give something back...hopefully this will be helpful to someone else.