[X-Newbies] Tiger: Finder problems

[Carter Tomassi]

Weird problems are appearing in Finder (10.4.1). Changing names of  
files or folders suddenly becomes inactive. And Command-N no longer  
brings up a new folder.

This occurs without warning. It started yesterday when I tried to  
change the .extension of an image file. About the third time I tried  
the change the cursor was active in the window but no letters  
appeared on the screen.

Logging back in seems to correct the problem but not permanently. I  
have repaired permissions and run Disk Warrior.

This is a fairly new G5-dual 2.0 with the Apple keyboard. Could this  
be a USB problem?

Carter