I'm using Windows XP, SP 2, which is not something I can change (work computer).
When I put in a USB stick, it never mounts. I get the two-note audio signal that means "USB activity" or whatever, but I never get the stick appearing in "My Computer". I always have to use Computer Management > Storage > Disk Management, find the drive and click "open".
After that it will work.
But only "open" works, not "explore". With "explore", the contents appear for a moment in the right-hand pane, then disappear again.
And although "open" works and the drive shows up as, say, J:\, the J:\ is only visible in the blue bar across the very top of the window, not in the Address bar, which remains blank. And if I open a new window and manually type J:\ into the Address bar, I get "Cannot find 'file:///J:/'. Make sure the path or internet address is correct".