Cable modem data light

[k s d]

Hello all.
I fiinally got hooked up w/broadband service (RoadRunner) and I have a 
Toshiba PCX2500
Cable Modem. Ever since getting hooked up last Thursday, the data light 
rapidly blinks about
2 or 3 times per second with a very, very slight pause every 2 seconds or 
so.... constantly,
even when I put the computer to sleep. The only time it stops is when I shut 
down, then
starts again during the reboot.

I assume this light is supposed to only be on when there is data being 
transfered to or from
my computer..?

Any advice on Firewalls? I installed Brickhouse and Apple's is turned on. 
I've tried turning off
both of the firewalls, but the blinking light continues the same as 
described above.

Running: Sawtooth G4 450DP, OS 10.2.6, 1G ram, plenty of hard drive space.

Any info/help would be greatly appreciated.
TIA.
-kevin

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