I just upgraded from 1.3.9g to 1.3.9.h and now everyone that logs in
at checkout gets this error: "

Login Time Out

Whoops! Sorry, but you are not allowed to perform the action requested.

You are still logged in to your account and may continue shopping. Please choose a destination from a menu.
I have tried to switch back to standard template, i've tried reinstalling the update. Before I switch back to 1.3.9.g has anyone else encountered this problem? Ugh!