I looked on HoFo to see if there were any MMS issues on Cingular and didn't see any mention, so it's likely something goofy with my Treo.

Seems the last two weeks or so when my wife sends me an MMS I'm not receiving it for sometimes 24 hours. One time I got one as soon as AvantGo did a soft reset for me, so it's possible it's a Treo thing too. But yet a different time I was at my desk and the screen turned on and I noticed the data signal was on and a minute later I got an MMS she sent the day before.

I use TrafficStat which has caused some problems in the past, but I can send MMS without any problem and it seems that's when I had issues with it.

Any ideas?