Your local ham radio (or Amateur Radio if you prefer) operator's club will quickly be able to decifer this bogus patent & provide any lawyer you may choose with valuable ammunition in fighting these trolls. This may include prior art for patent invalidation, expert testimony for hearings, & might even contain a lawyer or two. As a bonus, you may also find additional users &/or developers. For more information on finding a club or events near you, check out http://www.arrl.org/ for more information.

I've seen devices made in the last ~3 years falter in this manner while my 8+ year old WRT-54G works fine. My investigation has found: +++Wall warts suck -- BAD. Replacing them by connecting them to my own power supply yielded greater stability (fewer crashes) and greater range. +++Checking the RF modules find that many newer RF modules are designed for low cost. +++ +++Low cost RF modules were designed with lower Max Power limits (full legal power is full power of the module) +++ +++Low cost RF modules were found to use components with wider variance (i.e., tolerance values of resistors, etc.) +++ +++Low cost RF modules tend to just barely meet specification working on the ragged edge right out of the box. +++ +++Low cost RF modules tend to have very miniaturized antennae or even antennae only provided by PCB tracing, with no provision for external antennae My next Wi-Fi I will take great pains to ensure is designed for long life. I may even build my own.

Back when I lived in Baton Rouge, LA I had Cox communications. My speed was supposed to be 5Mbit, it always tested to within 15% of that. On occasions I have seen bursted transmisssions of 10Mbit for a redhat ISO.
Now I live in Hammond, LA and I have Charter. My speed is supposed to be 3Mbit/256Kbit. It always tests to within 10%. I have seen bursted downloads at 5Mbit & bursted uploads at 600Kbit for as long as 3 seconds. Word is they're offering 5Mbit this summer, I can't wait.