Okay, so here is my story: 
 
I picked up my CE ME2 today, opened it up and decided to redeem the Cerb network code. I navigated to the BioWare official site (http://social.bioware.com/redeem_code.php) to redeem the Cerb Code and I typed it in. Instead of getting the Cerb Network activated, i got a Collector's edition armor and weapon. I then tried to redeem the CE weapon and armor, and got the armor and weapon again. 
I then turned on the game, and got the EA login screen. I logged in using the EA account that was associated with the bioware account that I redeemed the code on. Then it asked me to type my cerb network code in. I did, and then I got a message telling me the code was already in use.  
BioWare's stite tells the same story. "Code has been redeemed and cannot be redeemed again". 
 
They have a whole thread (6 pages last i read) going on about this at the forums ( http://social.bioware.com/forum/1/topic/107/index/772606/3 ). Stupid BioWare and EA. 
Anyhow, has anyone else had luck with the PC version?

Hmmm... I hope they do something about that. Maybe if the problem is so widespread, they won't just ignore it.

I am waiting in the chat que to talk to a CSR, I will post a conversation script once I am done. 
AFAIK (personal opinion), you should only redeem the code in-game and not online.

OMFG.... EA are complete loosers.  
After waiting 30+min in line for CSR chat, i was informed that "there are no CSR agents available. WTF.

Thanks for the heads up. Waiting for my copy (DELAYED IN EUROPE FOR NO REASON YAY), and will activate it in-game instead then. They had the same issues with Dragon Age regarding their superidiotic DLC system.

I hope this get's resolved. I have another Cerb network code handy (from EBgames, I told them my problems) and they gave me a new code) But I don't want to use it yet.

has anyone had luck redeeming the code on the PC? 
 
UPDATE: After 4 hours on the phone, problem resolved.