Source: http://www.teamxlink.co.uk/XLink Kai 7.4.22 (Windows) is now available. Among other improvements, this build boasts enhanced PS2/PS3 support. OS X coming soon.
Before a couple weeks ago this day felt like it would never come haha. We had been forced to use an older version of Xlink Kai (220.127.116.11) for many years while the newer versions had broken PS2 support. Now we can finally use the newest release of Xlink Kai. A few of us tested it while they were finishing up this version. Unless it has changed since we last tested it this version should work with Playstation 2 LAN games just as well as version 18.104.22.168 did.
You can get version 7.4.22 from the downloads section link which is located at the top of Xlink Kai's website: http://www.teamxlink.co.uk/
You can also directly download the windows version of Xlink Kai version 7.4.22 if you click this link: http://www.teamxlink.co.uk/binary/XLink ... -win32.msi
As of right now the OSX and Linux versions of 7.4.22 aren't available. They did say in that they are working on the OSX version though.