I have 2 DaneElec sticks, one is 1GB, but says it's 512MB (I had a great lolz over that) The other is a 4GB.
I have not installed USBmount.
Most times after I plug these things in, the window for them automatically opens.......but if not,
I plug them in, open my file explorer (Konqueror), navigate to system:/media
Refresh and there they are. I unplug them and poof gone. The wonders of auto-detect huh?
I don't usually need to manually mount anything anymore, not even my old 80GB external.
That's my $0.02.