What's the difference between running wicd in Standard 6 and SOHO 6? There's a 10-20% difference in signal strength between the two "flavors", with SOHO getting the better percentages.
Can't say I've noticed a difference in signal strength, but I'm usually pretty close to the router. I have noticed that Wcid seems to react faster and place less load on the system with a more recent kernel than the one in VL 6.0 Standard. Don't know if that might explain what you're seeing.