New Snow Leopard ... "Select All" won't Trash Just ran Snow Leopard on my 10.4 Tiger iMac6.1 desktop.  All has gone swimmingly.  But now ... the way I work, I have several icons, photos, on desktop when I'm finished and I Trash them.

Clicking Edit, "Select All" highlights all, and when I drag all into Trash, it doesn't Trash.  I can individually select an icon, click and drag, into Trash.
But "Select All" doesn't work.

Ideas?
Likely there's an item in your 'select all' that cannot be trashed; a .dmg in use or a mounted disk (your hard drive, a CD-ROM, a flash drive), for example.
That'll prevent anything in your selection from going into trash.