I just bought a SanDisk 512mb SD card, and I'm trying out PowerRun. I love the functionality it provides, but it seems to slow down my Treo, even when using apps not running from the card. For example, it takes the phone application an extra second or two to start up when I press the phone key, and it takes the Home screen a little longer to show up too. This seems to happen if the card is in the Treo or not. Anyone have any ideas on why this is? Is it because of PowerRun, because of the card, or something else?

Also, when I remove the card, is there any "ejecting" or "unmounting" I should do before popping the card from it's slot?