Novell Netware 6.5 SP3
Groupwise POA Agent 6.5.6

Hi,
We had Netware 6.5 SP3 server with 2GB of memory and the initial amount of
total cache buffers was around 250000 when it started. After about 40 days
the amount of total cache buffers decrease to 40000 which cause severity
performance drop in the server so we must to restart the server.
To avoid restart the server each 40 days we increase the available memory
to 4GB after that it still initiate with the same amount of total cache
buffers (250000) and the situation goes worst because in only 4 day the
amount of total cache buffers decrease to 679 which obviously made the
server inoperative.

What could be wrong ? We don't install nor change anything, we just
increase the amount of available memory.
What could cause that the amount of total cache buffers decrease so fast?
There is a way to manually increase the initial amount of total cache
buffers ?

We really appreciate any comments that help us to improve this situation.
Regards,
Nicolás.