Wheelgun, try this and let us know if it fixes your problem.
crap, I cannot figure out how to ad an attachment so i`ll try to type the fix.
Try this:
Reset; press and hold arrow up, press and hold the page, press and hold the enter and finally press and hold the power and it will global reset the software in eTrex Camo.
ps: Instructions for setting the time are in your manual under setup.