Hi Lorraine,
If you send a PM to anyone, and IF that person has not yet read the PM, then yes, it can be deleted. Get into 'My Controls' - at the left side - you will see the Menu. The first is 'Messenger' and at the bottom of that list is 'Message Tracker'. Click on 'Message Tracker' and a page will open showing which messages have been read and which messages have not been read. Under 'Unread Messages' - you will see the following:
The messages shown here have not been read by the person they were sent to. You may delete them before they are read.
Because Tom had not yet read his message, and because I had solved the problem - I simply deleted the message (PM).
As far as Gallery goes, my understanding is they have 2 flavours now. Gallery 1.5 which is what we are used to setting up and Gallery 2 which is a new version. I gather Gallery 2 uses a database like MySQL - I think there are a lot of added modules you can download and install. I may work on this later tonight or tomorrow. I hardly look at my Gallery - I get so frustrated when I can't get logged in. The Gallery Team do acknowledge that this is a problem with Gallery - I think they have worked on a fix for Gallery 2.
Gail