[ale] Does anybody have experience with a load-balancing/failover distro?

[millia at panix.com (david w. millians)]

I've got a district that is getting a second internet connection for 
redundancy purposes. They would therefore love to have a load balancing 
and failover appliance. Obviously, there are some vendors that have 
products to sell them, and also obviously, they cost money that they 
don't have.

A fair number of districts have used "untangle" before, but it appears 
that they charge for the lb/f capability; it's not included in the free 
download. It may be cheaper for them since they don't need firewall, 
filtering, etc., but free is preferred, since even the box to do this is 
a factor...

So, do you know of/have you used any linux distros that do this well and 
easily? I'm going to go to distrowatch now, but I just want to know of 
good experiences.

Thanks,
David