Hi Asma,
Thanks for your response! Let me give you a little more detail on this issue I'm experiencing. I tried you suggestion before I even posted the question. Here is what happens when I attempt to create a new media set.
The media set properties dialog box pops up. On the general tab there is a field to name the media set so I gave it the name TEST and below that is the creation date 02/01/2007 14:46:42. Now a little further down there is the media set periods section. For the overwrite protection period area, I've got NONE which is grayed out and Infinite - Don't Allow Overwrite (other options here are Hours, Days, Weeks and Years). In the append area, NONE is also greyed out with all the other options the same as before with the exception of Infinite - Allow Append which is selected.
The default media set created on installation of 11d had these exact settings as well. The backups are still appending to previous backup and not overwriting as I'd like it to.
What else can I try to get this working?
Thanks in advance,
Bevan