So N900, and like 17 other devices are all working flawlessly on my unprotected, mac-filtered, WNR2000, 145Mbps wifi (should be wifi-N).

Yet for some reason, my N9 refuses to play ball?

It connects fine, and during connection the wifi icon turns blue, but once connected, it's horribly slow and the icon never turns blue again. Sorry if that's not enough, but if you could help me sort out my issues, it would be much appreciado!

I'll run any further diagnostics asap, so just ask.

*bump*

Seriously not keen on the dodgy wifi status of my baby

If the wifi icon turns blue that means it's connecting.. If it's solid white that means it's connected.

Do you have NITDroid installed?

If you do.. Have a look at this: http://talk.maemo.org/showthread.php?t=84727