I've got madwifi up and working on my MacBook (bought Feb '07), but the signal strength is constantly one or maybe two bars, despite having 4 bars in OSX. The internet is really slow, and the signal cuts out every 2-3 minutes and I have to wait for it to scan for the wireless network again. I recompiled madwifi when I upgraded to 8.04 (through update manager) for the new kernel, so I'm on the latest build, but this problem was present in 7.10 before I upgraded. I've tried recompiling madwifi two or three times using the instructions from the MacBook wiki, to no avail. Suggestions?