I don't use wireless, but saw this link in a sticky post on the Networking section of this forum. The poster chazsheen was successful and said:
After messing around with the ath5k MadWifi stuff when I had Elyssa installed I decided to go another route after upgrading to Felicia RC1. I've got the 5007 pain in the butt card in my laptop and decided to give the ath9k drivers a shot this time around. It went 100x times smoother, it's easier to get installed, and my network tools properly displays my card information now.
Appears this site has support for many network cards and usb dongles. http://wireless.kernel.org/en/users/Dow ... essdrivers
The site indicates:
Here is the list of all the drivers we support in this package.
adm8211, at76_usb, ath9k, ath5k, b43, b43legacy, iwl3945, iwl4965, ipw2100, ipw2200, ub8xxx, libertas_cs, p54_pci, p54_usb, rndis_wlan, rt2400pci, rt2400pci, rt2500pci, rt2500usb, rt61pci, rt73usb, rtl8180, rtl8187, zd1211rw,
Sounds like you've tried a few things already, and are one of those people that have allot of experience on the Ubuntu side of this equation. That's good if it was Intrepid - read allot of people are having issues with wifi on 8.10.
It'd be good if you told everybody what wifi manufacturer you're having trouble with on LinuxMint, what version of Ubuntu that things were easy to get the wifi running on, etc.