hero restarting when updating apps in market

[djay04]

I went in to my downloads in the market and there were a few updates to alot of the programs I have so I started updating like usual when it just decided to restart the whole phone and now every time the phone boots back up i go into the market and it say its staring download and its talking about the advanced task killer I was updating... but it just says that then restarts the phone over and over. so then i decide to cancel the download and try to download something else and the same thing happens... has anyone else heard of this or experienced it them selves?