I'm a bit lost here, I take it you bought it at a "Razer Store" if so why didn't they test the faulty item there and then when you returned with it and replace it?
As any good store should do with a faulty item.
If it only worked for 2 weeks, it surely comes under trading standards.
If the store is suggesting that you should contact Razer with your complaint to get a replacement, then again that is wrong.
It is up to the store you bought it at to replace it...
Though it won't hurt to let Razer know you problem.
http://help.razersupport.com/us-en/products.asp

This isn't the official Razer Support site m8, though some of their staff do pop in from time to time to read the posts and pick up on if peeps are having problems.
Hope this helps and I have no doubt some other peeps will jump onto this post and give you some good advice. 

sorry if I didn't explain myself well.  I was in a hurry and frankly it just doesn't matter at this point.  Here is the sequence of events if it helps anyone with my frustration.

- I purchased the keyboard at a tiger direct store the last week of January weeks ago
- worked flawlessly for 2 week
- on the beginning of week 3 random keys would lock constantly until I replugged the usb cables
- I contacted razer support with the serial number and they had me do a bunch of tests including reloading drivers, testing the keyboard on another computer, pluggin the keyboard into another usb slot, etc...
- During these this testing period I looked up this issue on a bunch of websites including this one and learned that this was a very common problem.  This pissed me off because Razer support was basically jerking me around instead of just replacing the damned thing for known issues.
- I returned the keyboard and got a great one from a trusted company (Logitech)
- At this point I got an email from Razer support saying that they were now ready to replace my keyboard to which I told them to shove it up their collective arses and that they lost a customer.
- Last week I get an email stating that they were happy to have me as a customer, that the website was revamped and that I could have 10 dollars off any of they're (as far as I was concerned) crappy, untested , poorly developed products.
- I replied with the same song and dance about them loosing a customerand that they should have spent their money on properly testing their products instead of the website.
- a reply came the next day saying sorry
- a day later I get an email saying that someone signed me up for an account here.  I never asked for it so I took it as a hint that someone wanted me to post my ordeal on this site.
- So I did.
 

Ah you shoulda got a Model M with USB cord those things are monsters and they will last your entire lifetime.

But yeah Logitechs are good too.