If your ISP is Canadian, keep an eye on your bandwith (the LW tools->Statistics->Bandwidth, or maybe your ISP has set up an account page for you).

Some ISP's throttle or cap you monthly limits, and running as an UP 24/7 can use up almost 1GB/day (though the newer versions use less since they don't connect to as many leafs as much).

my ISP limits me to 70GB/month before sending out a notice. You might want to check with yours.

Cheers