PPCGeeks - Missed calls/texts problem

I have had a couple of people tell me that they havent received my texts when i was sure I have sent them one. I thought maybe they just didnt want to reply and pretended they didnt get it.

now i have yet another problem. I tried to see how my ringtone sounded so i used my home phone to call my cell. It didnt ring at all.

so i tried again, and it rang. A third time, didnt ring, fourth, it rang again, etc. the pattern is weird.

Now my question is, is this a ROM related problem, or defective phone, or ROM?

It seems that sometimes when I call, the phone doesnt respond for the first 3 rings, then starts vibrating and ringing, as if the signal lags before it reaches my phone.

I am worried the text message problem might be related to this. What's the deal?