I've had to make some changes to signature functionality. The previous functionality had some subtle problems, which combined with the continuously increasing user numbers lead to instability of the whole NoobMeter.com website at times. During this and last week I've tried to resolve it, but without success.
Therefore I made the decision to change the whole approach to generating and serving signatures to offload the server.
There are some side effects - signatures will be updated on a nightly basis and only for registered users for the main account linked. Also, the "unofficial colour customization features" no longer work. I need to think about how to add them back properly - I would have liked to do it before making the change, but having the server having issues nearly every day, even if only for some minutes, is something I felt is a bigger problem.
In the end, I expect this change to lead to a more stable NoobMeter.com server.