Weird vmstat collection on FreeBSD client

[Arnoud Post]

I have Hobbit 4.1.2 server and client running on FreeBSD 5.3. I'm trying 
to get a nice vmstat graph out of it, but something is wrong.

I just noticed the comments beneath the graph don't count up to 100%:
System :     4.3 (cur)
User     :   90.3 (cur)
Idle      : 185.9 (cur)

Looking at the client data these numbers don't come back any where:

[vmstat]
 procs      memory      page                   disk   faults      cpu
 r b w     avm    fre  flt  re  pi  po  fr  sr ad0   in   sy  cs us sy id
 1 12 0  526080  50484  367   0   0   0 358   9   0  347 1776 336  5  4 91
 3 13 0  526064  49920  301   0   0   0 293   0   3  349 1591 325  2  4 95


Where can I check what data is collected and how it is parsed to rrd, or 
turn the debugging on? I found the grapher.cgi and rrd files are not 
readable.

Arnoud Post