Can't find my wireless network

Hi

I am using Edimax EW-7206APg, firmware version 1.26

http://www.edimax.co.uk/en/support_d...p%3D1&pd_id=18

My network setup is as follows:

Broadcast ESSID: Enabled
MAC Filtering: Disabled
Static IP network
Running mode: AP
Security: WPA2 AES

It has been working since I bought it six months ago. But today
suddenly I can't see my network at all. I am using the Ralink client
utility. I can access the wireless router web interface via wired
station and everything seems to be up and running.

Could anyone give me some tips as to how to troubleshoot and resolve
this?

Thanks
Yousaf

Update:

Network is back! Still can't figure out what happened though. Any
ideas?