I seem to run into problems with the max. number of processes every so often. Anyone know what is best practice for fixing this?

Running OSX 10.6 on a MacBook Pro i7.

ulimit -a returns these values:

core file size (blocks, -c)     0
data seg size (kbytes, -d)      unlimited
file size (blocks, -f)      unlimited
max locked memory (kbytes, -l)      unlimited
max memory size (kbytes, -m)        unlimited
open files  (-n)        256
pipe size  (512 bytes, -p)      1
stack size (kbytes, -s)         8192
cpu time  (seconds, -t)      unlimited
max user processes  (-u)        266
virtual memory  (kbytes, -v)         unlimited

When the error occurred I checked, and there were 102 running tasks and 523 threads.