In the case that you have, it seems that your epocrates program is corrupted. You can verify it by doing a SYSTEM RESET. Refer to the link:
http://kb.palm.com/SRVS/CGI-BIN/WEBCGI.EXE/,/?St=83,E=0000000000382653970,K=5956,Sxi=5,Case=obj(887)
if your handheld will work fine after doing a SYSTEM...