Access errors 'cookies not enabled'

Joomla 1.5.25
Moodle 2.0
Joomdle 0.7

Gentleman,
We are experiencing regularly reported access errors from users with the same problem. The site returns the error:
"Session expired or cookies are not enabled in your browser. Please press 'reload page' in your browser, and enable cookies in your browser. Please refresh/reload page before filling in."
Users have tried different browsers and machines with no success.
Please advise.
Thanks,
Paul

Well, it's persistent now.
Started a thread on Moodle forums, so far no help.
I can login through the Virtuemart cart, but cannot log in through the cblogin module that had been working fine.
Can't point to anything that has changed.
Any assistance would be appreciated.
Paul

Swappin the cblogin module for the standard joomla seems to have resolved it . . . for now.
Paul

Hi.

For your new info it seems this is not related to Joomdle, but rather to the joomla login procedure.

If at any time you want to test logins without Joomdle enabled,to determine if it is involved, you can disable the joomdlehooks plugin.