Multiple Registry Keys for the same printer

Hi there,

I run my printers through a print server and also apply them using group policy to users and machines.  I found today that in the registry key:  "HKLM/System/CurrentControlSet/Control/Print"  There are over 50 registry keys for the same printer.  The only difference is that a number has been added to the end of the name.  I have not experienced this before.

What could be the issue here?

Thanks in advance

Chris