I have wireless as well. In Soldat r/s I'm now knows as "The warper" >_>
Every 10 or 15 seconds my ping will jump from 50 to 180+, making me warp (usually it jumps to 300).
The spike only lasts maybe half a second, but it pisses a lot of people off in scrims. It also throws me off incredibly.
It never was like this when I first got it, then it progressed and got worse.
Any help?
EDIT: Come to think of it, the lag may have progressed when 1.4 came out... not for certain though...