I've updated the Mambo CMS application that drives the web site to version 4.5.3h plus the latest security patch that was available on Febrary 26th.

Originally this was to address a security concern that our site could possibly used to leveraged to attack on other sites.

See:

http://secunia.com/advisories/18935/ 

and

http://source.mambo-foundation.org/Remository/Download/Mambo_Core_Files/Security_Updates/

One of the side effects has been that some issues pertaining to editing and creating articles and calender events appear to have been corrected.

Paul, you should now be able to create and modify calender events from the main window now. 

Please let me know if anyone has any issues with the latest updates.