Re: Wireless working on server until I changed router.
Yep. Your interfaces file tells the system you want WEP, not WPA. Please try this:
Do I need to add something into the interfaces file to explicitly tell it the security method
Even better, since it's a server and you want to know its IP, use:
iface wlan0 inet dhcp
Of course, substitute your details here.
iface wlan0 inet static
address 192.168.1.108 <--an address outside the DHCP range in the router
You don't need the managed and channel declaration; the router will negotiate those details.
"Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.