Hi. I've discovered what I think is a very minor bug in either SFML or OpenAL. It's fairly easy to reproduce on Linux:
> set sf::Listener transform (works)
> create and load sf::SoundBuffer
> create and play sf::Sound
> wait until status of sound changes to stopped
> delete sound and the sound buffer
> setting sf::Listener transforms now give errors
I've attached a minimal example I put together. You need to link to the debug build of SFML or you don't get the error messages.
edit: the errors I get look like this:
http://hastebin.com/zihabeguvi.txt