Alan,
I am having the same problem. I redownloaded the newest module of avcalendar today. Uninstalled my previous install and reinstalled.
When I add a new event it does not show up and is because the begin date/time is saved as a date/time after the ending date/time and NOT as the date/time entered.
Before installing I verifed that my portal timezone was set correctly (CST).
For more information, this is the start and end times that I entered:
Start: 2/10/2006 6:30 PM End: 2/10/2006 8:15 PM
The SQL table shows the date and time as:
Start: 2/11/2006 12:30 AM with a duration of 105 minuites.
When I change the SQL table to correct the date and time then the event shows up, however now the time shows up as 12:30 PM on the calendar even though the SQL table is set to 6:30 PM.
I have verified that all of my timezones are set to (UTC -06:00) Central Time (US & Canada) which is the six hours difference between the entered time and the SQL table posted time.
I really want to use this calendar as I really like it and it does exactly what I want it do to along with the calendar list module. I hope you can fix this asap. Thanks.