I'm running civicrm 4.4.19 with Joomla 3.4.4. Sometime back in September my scheduled crons stopped running. Debugging shows that it is throwing an error of:
Fatal error: Class 'Joomla\Uri\Uri' not found in /home/XYZW/public_html/libraries/joomla/uri/uri.php on line 24
I've gotten the same error both by using the cron execution of the php file and by browsing to:
I get the same error if I type the wrong username or password, but not the key (then I get invalid key error).
It looks like the cron had stopped working when I updated from Joomla 2.5 to 3.4 back in September.