I've been using 188.8.131.525 for ages now. In the last while, two upgrades to 5.7.x were offered. Both give me the problem of my Bluetooth headset not showing up in the device list and both require me to always input my username/password to go online.
We won't go into the UI of 5.7, which was a horror that I'd sooner forget.
All in all, a complete waste of time. I'm back on 184.108.40.2065. Thank goodness for Time Machine; rolling back from the bad install took all of 60 seconds.
Does this Skype version run on OSX 10.8 Mountain Lion btw?