Bobby, Did you try running without your memory cards in your Axim? After I pulled them I did not have the power-up problem (and fast battery drain).
X51 users have been having the powering on problem for a month:
http://www.aximsite.com/boards/showthread.php?t=100190
I wonder when Dell will sort this out...I too will probably go back to 2003se until this gets sorted out.