Signal strength drops randomly

[celith]

I've been lurking around here for awhile, and picked up a lot of good information, so I'm hoping someone here might have a clue about what's causing my problem.

When I have my phone at my desk at home, I usually have full or nearly full bars and no issues with calls, data, sms, etc. However, there are random (and increasingly frequent) times when the phone will report only 1 or 2 bars of signal during which time any call I attempt gets dropped with a "signal lost" message. Sometimes soft resetting the phone will bring it back with normal signal, other times even multiple resets don't seem to help. I thought it might be weather related since I was noticing it when it rained, but today is clear and sunny and I'm having the issue as I type this.

The phone is less than two months old, and I'm suspecting a defect of some sort. I noticed similar symptoms within the first few weeks of having it, but as I had just switched to Sprint, I wasn't sure what the normal signal variance was for my location. What started as a sporadic issue only showing up a couple times a week is now happening multiple times per day.

So my question is, am I missing something obvious, or is this one just toast?

Thanks.