Well, to sum it up… this has been a “pain in the ass” for me. The last few days I have had some trouble running OS X 10.8 (Mountain Lion) preview… which is not that weird since it is a developers preview. The main problem was that MacPorts didn’t work since 10.8 uses Darwin 12 and Lion (with MacPorts 2 installation) uses Darwin 11.
So, I managed to screw things up so badly that I spend whole yesterday evening copying files manually to a USB drive using the “Install Disk” for Lion. Now I formatted my MacBook Air and Mac Mini and installed Lion once again.