I bought a new 360 a couple weeks ago. Since then, I've been trying without luck to recover my existing BlogusMaximus account. Every time I go through the process of entering in my Live ID, my email, my password (all via controller or remote, which sucks) and every time it fails. It never fails in exactly the same spot each time, but always says the same message: XBOX Live Signup is not available at this time.
A few days ago, I checked the support section of www.xbox360.com and it said they were working on some unidentified issue, but now it says everything is operational... but I'm still having problems.