Toshiba e-Studio Printer (by 2 users)

Hi

I have a XP professional machine and on that i have
installed the drivers of Toshiba e-Studio Printer. I have
shared the printer for all the other users in the domain
to use and to take their print outs. The problem I am
facing is that whenever a user shoots a printout it adds a
printer on the machine. So at the end of the day i have 10-
12 printer of toshiba on my system.

How do i solve this issue as i am not able to understand
what exactly is wrong with me system. IF i remove sharing
then it is working fine and no other printer gets added on
every shoot of print command.

Please help me solve this issue as it has become a major
hassel for me.

Thanks
GAUTAM