APC, let;s hope it is not water damage.
If you really think it could be water damage (you know how wet it acutally got), pull the battery and let it dry out. See the instructions and tips in the FAQ section. Got Your BlackBerry Wet? - BlackBerryFAQ
If you feel it really did not get wet, pulling the battery and rebooting may help, as well as reinstalling the OS as John said above.
Again, if you are not sure, and think that it could be a water problem, follow the first suggestion and link.
Good luck, and welcome to the Forums.