Verizon LG Revolution 4G keeps refreshing

[cmptekinc]

Guys,

One of my users has a Verizon LG revolution, ver 2.2.2
Phone was working fine with our Exchange mail until the other day, now the phone keeps refreshing. well, I should rephrase that. When you go into Exchange mail account, it doesn't show any messages or anything of that sort, the screen keeps on refreshing. We turned the phone Off and On, after that everything started to refresh even the main screen. So went to accounts and removed teh Exchange account, refresh of the main screen stopped. We then attempted to add the Exchange mail account, after hitting the confirm or accept, there is no Exchange account...
Really odd. Also, I'm new to Android, don't personally have one. We will contact verizon for suppport as soon as we have a chance.
I did find that the SD card is basically empty and a couple of apps cache was almost as empty as well.... Any suggestions ?

Thank you in advance.