Print problem after update

We have a peer-peer network with 3 machines running Win 2k, networked through
a D-Link router. 2 of the comps have local printers. Comp A only prints
timely to its local printer. Comp B only prints timely to its local printer.
Comp C can print to either printer. All 3 computers can see and share files
just fine.

If Comp A tries to print to Comp B local printer, it takes about 5-7
minutes. Same with Comp B to Comp A local printer.

This appeared after updating beginning of December. We also unhooked our
network to paint our office immediately before updating. As all connections
were labeled, I am confident that all was put back exactly as before. I
don't know which, if either, has anything to do with this.

Any and all help will be greatly appreciated, as the different printers are
for different tasks.

Thanks, Lisa