http://lists.freedesktop.org/archives/polkit-devel/2009-November/000259.html asks for a system logging feature
Should be fixed by this commit http://cgit.freedesktop.org/PolicyKit/commit/?id=c93407fa915843687e4dd5656e23df780c823a50 Note that the command lines included in the log (enclosed in brackets) generally can't be trusted - I still think they're useful though.
As mentioned here http://lists.freedesktop.org/archives/polkit-devel/2009-December/000283.html I've removed the ALLOWING and DENYING log messages with this commit http://cgit.freedesktop.org/PolicyKit/commit/?id=869743bedd23633db765dbaab451d4d99e7be822
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