For a few years, my Netgear router DG834G ran trouble free 24/7. Unfortunately it died and was replaced a few months ago with another Netgear router DGN2000. Occassionally over the past week or so, it drops connection, resulting in the need for me to switch it off, wait 1 minute, switch it on and normal service is resumed.
My local telephone exchange is just under 5 miles from home and is not yet converted to digital, so my download speed is on average 1.5mb.
Do you have this problem when running 24/7 with yours.