troubles with ipfilter v3.4.22

Hello,
I have an ultra 10.
I had to force compilation at 32 bit or ipfilter won;t work. It will make
the system block. In 32 bit mode instead it works but there is only a
weird thing:

ishtar [10:09pm]{root}[~]> w
10:09pm up 6:25, 1 user, load average: 0.00, 0.00, 0.02
User tty login@ idle JCPU PCPU what
w: read() failed on /proc/3431/status: Value too large for defined data
type
root pts/2 9:41pm w

using w it displays me this weird message.
The process PID 3431 is ipmon which I am running.
How can I get rid of this error?
thanks

Rick

[632 byte] By [CodeProf.com] at [2007-12-24 21:38:00]