When is Linksys/Cisco going to fix E4200 problems??

Question

All the problems started when I upgraded from a WRT54G (never had a problem with this router over several years) to the E4200 (v1.1.02)  a couple of months ago. No problems with any of the wired connections of course, but all my wireless 2.4 GHz connections had problems immediately -- decreasing signal strengths (no matter how close to the router) and eventual loss of connectivity.  I tried all the conventional solutions like switching channels, checking for interference, moving the router to "higher ground" where it could vent heat better (this baby really runs hot)  and be unobstructed,  etc., but the only thing that would cure the problem was to reboot the router, usually once or twice a day.   I checked the forums and found that lots and lots of folks were experiencing this behavior. I finally discovered that if I disabled the 5gz band the 2.4 GHz connections would no longer be dropped (by the way, once they're dropped, the only way to get back is to  reboot the router; eventually the router state is such that nothing can connect to it).  Still tends to have signal strength loss over time but at least we're running consistently.  The other problem I'm experiencing is that if I get more than about 30 - 35 feet away, there is a significant decrease in signal strength.  
I bought this router for (1)  the gigabyte ports for my wired machines; (2) increased signal strength for my wireless devices at greater distances; and (3) the dual band capability to handle the 5 GHz spectrum as those devices become more prevalent.  Well, 1 out of 3 is pretty pathetic performance for what is a relatively expensive high end router from a  company that until now I had a confidence in their ability to produce technically sound hardware. 
I may be way off base here, but based on over 40 years experience in IT, this appears to be part of a larger trend where the bottom line seems to be dicating the rush to market of inadequately tested hardware and software. 
Linksys/Cisco -- can you please acknowlege these problems and what the current plan and timetable is to fix.  The E4200 has been in the market place for a while now and I still don't see a firmware upgrade. 
David (Extremely disappointed with Linksys/Cisco and the E4200)

Answer 1

farookahmed wrote:
I got my linksys e4200 a few months back along with x3000 ( upgraded my home wireless network ). While the x3000 is great the e4200 stil does not work with mac. It  just can take the ip adress once i power off the mac and on it. Called linksy support they gave me a rma ( return merchandise authorisation ). The issue is still there even with the new one. Cant be fixed even with 1.0.4. Bad product dont buy it.
Spoiler (Highlight to read)
What have you done so far with the replacement device?