Cacti.  Very easy to setup.  It uses MRTG though so any short outages 
more than a few days ago probably won't be noticable to the graphs. 
Very nice for monitoring trends on your machines.

If you're interested, I've got a Cacti box that you can take a look at.

mdk

Allen S. Rout wrote:
> I'm getting angsty about dropped SSH sessions over my cox SOHO, and I
> wanted to start off my discussion with them informed by some weeks of
> charts and logs, e.g. I had N-minute outages here, here, here, etc....
> 
> What do you-all use for similar sorts of things?  
> 
> - Allen S. Rout