Motorola Droid :: Phone Goes Mute / No Easy Change From Profiles

I switched to a Motorola Droid 5 days ago (from a Blackberry curve). I'm having some trouble understanding some of the behavior and getting used to it. These are all things that I didn't have to deal with on the blackberry. I know they are different devices but I use my Phone primarily for work. I'm afraid now that I'll miss important messages or voice calls..

- Phone goes Mute (ringer)... No idea how it gets there. Probably a bad finger swipe on the home screen. Is there a way to disable this?
- No easy change from profiles (notifications, ringer, etc...). I tried a few apps but they all seems to fail at turning on/off notifications for e-mail/gmail.
- don't receive my messages (gmail), seems like it doesn't sync all the time
- gapps crashes all the time when downloading an app from the market.
- Random calls...
- Didn't use the browser, battery is 70%. Put it down for a movie (2 hours) and then battery is now 20%... Browser used the battery 50% according to the phone. Switch to the browser, was on the google.com home page.

I did search on all of these and they seem to be pretty much standard issues that people are having. Are they?Other that that it seems like a great phone. But like I said, I'm afraid of not getting calls sometime because it gets turned to "mute".