Is this a problem with the TyTN's memory management system? I'm not running any programs off the card. I kept a large mini-SD card in my K-jam at all times with no such slowdowns on power-up.
I'm having a new issue, which is more of a nag than a real problem. I recently picked up one of the new 2GB micro-SD cards from Verizon. When the card is installed, I experience a 1-2 second delay from the time I hit the power button to the time the screen comes on. With the card removed there is no delay.