[Xymon] Dir size check "Could not determine size of directory"

[Betsy Schwartz]

Trying to do a directory size alert but I am getting a yellow alert:

! /mm/foo/request/chkpt
Could not determine size of directory /mm/foo/request/chkpt

The directory exists and xymon can read it.    It does take a very
long time, up to two minutes. Might there be a timeout and if so might
I be able to change it?

(but that's why we need to alert, because this dir is growing too large...)

-bash-3.2$ whoami
xymon
-bash-3.2$ time du -s /mm/foo/request/chkpt
2627560 /mm/foo/request/chkpt

real    1m29.059s
user    0m0.115s
sys     0m2.259s

client-local config:
[foo.example.com]
log:/var/log/messages:102400
ignore MARK
ignore be2net
dir:/mm/foo/request/chkpt

analysis.cfg:
HOST=foo.example.com
        LOAD 12.0 99.0
        MEMPHYS 100 101
        MEMACT 70 80
        MEMSWAP 60 95
        DIR /mm/foo/request/chkpt yellow size<25622560
        PROC crond 1 -1 yellow
        PROC nscd 1 -1 yellow
        UP 30m 9999d

Looking at client data I see:

[dir:/mm/foo/request/chkpt ]
2627096	/mm/foo/request/chkpt

Any thoughts?
server and client are both 64-bit  RHEL5 running xymon 4.3.10
(hope to update soon!)
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