And what part of the system do you think is at fault? Nothing in your post tells us which part you suspect but only how you reboot.
Over the last several days, my SBC internet service has regularly disconnected.
I'm using their DSL (mid-grade package), a D-Link 624 router for wireless, SBC's Speedstream modem. The computer is hooked by hard-wire through the D-Link.
System is WinXP, using Firefox.
About every 2-3 hours the service goes down. This requires that I shut down the computer, shut off the router, unplug all the cables (power, in/out DSL) from the router, wait 10 seconds, re-power the modem, plug in all the router cables, and re-start the computer.
While that procedure solves the problem, it's only temporary.