In you Tools ... Server Info ... you should see something like:
Zen Cart 1.3.8a
Patch: 1::
Database Patch Level: 1.3.8
v1.3.8 [2009-07-21 10:35:09] (Fresh Installation)
v1.3.8 [2009-07-21 10:35:09] (Fresh Installation)
What do you see?