up2date seems to not be reauthenticating when it's session token runs out. This is more or less the last bit of #53674 reopened under a new id (since its a new bug, but with the same behaviour). At the moment, I dont have a good idea why this is happening. My guesses are either rhnlib is returning the timeout error code different, or the latest version of doCall is just broken.
rhnlib bug, changing component
*** Bug 69560 has been marked as a duplicate of this bug. ***
Fixed in rhnlib-0.8-8
Make that rhnlib-0.8-9
Closing some bugs that have been in MODIFIED for a while. Please reopen if the problem persists.