New to Sprint Diamond - Couple of quirks/issues

[mogulman01]

Long time Sprint user. Had a Palm Centro and Treo 800w before this. Just got the HTC Diamond for Sprint about 2 weeks ago. I bought it used from a guy, but it was in great shape. It had Might Rom 4.6 on it. I flashed it back to factory and flashed Might Rom 4.8 on it. I also have the Sprint 1.11.00f Radio on it. I only use this phone a few times during the week in the evenings and on weekends. I have a blackberry for work on weekdays.

I'm noticing a couple of quirks/funkiness and I was wondering if anyone else has experienced this, or offer any suggestions:

-A couple of times I've left my phone on a USB charger (not the factory one..The guy I bought it from lost it). It seems like its charging. It charges up. I can see the battery full. I leave it on the charger. A few days later.. I go to use the phone and the battery is dead. I think this might be related to the particular charger. The last 4 days I've used a different charger and haven't seen this. Could this be related to the charger?

-After not using the phone since last weekend (about 4 days), I took it out tonight. I noticed when using data that the indicator kept going between 1x and EV.. back and forth and the reception bars were going up and down. I know that the area that I am in has great reception and gets EVDO reception with my old Centro and 800w. I shutdown the phone by holding down the power button and started it back up. Now it is reading consistantly EV. Although even now.. I let it sit charging and the reception looked poor until I picked it up.. then it showed full strength. Does the reception indicator go to sleep or something? Any ideas why it would go into this funky state of 1x/EV?

-Last little thing is that I notice that the Sprint Instant Messaging App seems to turn on by itself. I almost never use it but wanted an AIM app just in case. When I go to the task manager to shut down some stuff, the IM app is running pretty frequently. I don't have it set to autologin. Does this thing connect to Sprint once in a while to update itself? Is there a better AIM app then the sprint one that might behave better?

I really like this phone.. just wondering about this funkiness.

Thanks for any help..