Although my Oracle VM Manager was running on OEL, I reinstalled the machine with Fedora and obviously I wanted the OVM Manager back on it.
The installation was pretty straight forward. Two tiny things had to be done in order to convince the installer to proceed. I needed to comment out the checks for the OS and the libaio package. After this the installer was on its way.
During the Oracle XE installation I adapted the swapfile (created a big additional swapfile) as the XE installer decided to stop when tere was not enough swap space.
Conclusion: OVM Manager runs fine on Fedora.