Web Player on IE9 not logging

Hi,
on a machine here with Windows 7 and IE9 the unity3d player is not logging during our game (no problems with firefox, chrome etc.), the log and manager file are not even created the folder is just empty before/during/after the game.

is it maybe storing the log file in a different folder?
any thoughts?

Thank you

no one?
is it a known issue or is it happening only here?