MRTG / SNMP acting up

Does anyone know what's wrong with this picture? The MRTG seems to generate straight lines, as if it's not monitoring but just guessing the amount of traffic the server is doing.

http://vibehosting.com/mrtg.png

The server freezed for a few hours during that long 'guessing' period (well I think it did since it was only responding to pings and nothing else) and got rebooted. Anyone know why MRTG kept drawing stats even though there was no traffic, and how to fix it?

What's also weird is that cPanel says the following about the top processes processes:

%CPU 97.3 /usr/local/bin/perl -w /usr/local/mrtg-2/bin/mrtg /usr/local/mrtg-2/webmin.cfg
%CPU 97.2 /usr/local/bin/perl -w /usr/local/mrtg-2/bin/mrtg /usr/local/mrtg-2/webmin.cfg
%CPU 15.0 /usr/bin/perl /usr/bin/mrtg /etc/mrtg/mrtg.cfg

And 2.88% average. Anyone know why it's acting up?

 

 

 

 

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