seems to be working well now with 13.8beta drivers and 3.10.5-201.fc19.x86_64, but I had to :
* install AMDAPP sdk 2.7
* manually overwrite all libs (x68,x64) with *ocl* name with those from app sdk
* ldconfig
* reboot
* run the app as a root
* disable 'quirks' (with '-S', probably just AMD_BFI_INT does not work with 7xxx cards)
tried with::
./oclvanitygen -d0 -v -v -S -i 1Lostxx ### wait about a minute