Put a few of these in and I see that one always has a red light for the top light but works fine (checked it with a signal strength meter)
Mine at home changes now and then to a red light but appears to work.
Have upgraded to latest firmware for both the Range Extender and the WRT54GS Router with SpeedBooster.
Can ping or access the web interface even if the light is red and it still puts out a string signal while red.
Linksys told me to take back the unit if it has a red light.
Would like others opinions.....
Thanks, Patty