Are people getting a sim card error message when they power off their Cingular Treo 650s? My Treo works great, but when I power off the cell phone, I get this message:

"Error: Please check your SIM card to see if it is damaged or missing"

It's like the phone can't see the SIM card, which is weird since phone works fine otherwise (and never gives me this message when I power ON the phone). Any info on whether other people's work fine, or are giving the same message, would be appreciated.

P.S. I'm using a 32k SIM card from my old phone, which the manual says you can't do--but people have had such trouble with 64k SIM cards I've afraid to request a new one. Any suggestions?