i've been using a palm holster on my 650 for about two weeks now. just today I took it off to clean my treo and when I put it back on the touch screen doesn't work. its not hotting any buttons or touching the screen but as soon as I take it off the screen works again. has anyone else had this issue? I'm thinking it might be too tight, but this is the first issue with it. its the origial palm holster with the detachable belt clip