Anyone run any applications from Black Bear systems?

We have a dept that runs their permitting software, w/ the client
(4.91) on a winxp pc connecting to my Netware 6sp4 cluster.

For the most part it runs ok, but once in a while, for a few days, the
response of this software is extremely slow, taking upwards of 5
minutes to print a permit.

I've tried tweaking some of the client settings, such as turning on
file-caching, but that just made it worse.

Any other suggestions as to what could be done to fix this?