Random Text messages

[pvpmc]

I have been flashing my Titan PPC-6800 with Sprint for some time now with No2chems roms, which by the way rule. Anyways, I am noticing that since flashing my phone it will send text message randomly unbeknown to me to other people. These other people have said that I send them blank messaged daily and/or the same message day after day. On my end I notice no such messages being sent. I am wondering if anyone has seen this and what can resolve this issue. I haven't checked my bill to see the volume of messages I have sent since I have unlimited text messaging but is has become a nuisance for the people that receive the messages. One side note is when I flash the phone I use pimbackup to back up and restore my contacts to the phone.