I was wondering if anyone has come across this issue?

I had a Sanyo 5300 before the Treo 650 and I never came across this issue.

I work 2 jobs and one of those jobs is a midnight shift. Now twice to my knownledge around 3am central time or so I lose service for about 2-4 mins.

Now I have gotten the same thing while I was at home around 5-6pm central time.

Each time when it came back I have 3 bar signal, which is normal.

Does anyone have any idea.

I do have the most current palmone update.