/dev/usb is a character device instead of a directory

[Felipe Alfaro Solana]

Hello,

I have just upgraded an old Fedora Core 2 installation to Fedora Core 
3. Everything seems to be working fine, except that after upgrading, 
"/dev/usb" is no longer a directory containing device files, but is now 
a normal character device file:

# ls -l /dev/usb
crw-------  1 root root 180, 0 ene 30 12:28 /dev/usb

Don't know what's going on here, but this has some nasty consequences, 
like UDEV being unable to create the device file for my USB printer 
into "/dev/usb/lp0".

I have searched in Google for similar reports but couldn't find 
anything related. Could anyone throw some light at this?

Thanks!