[shadd22]

First off, sorry if this has been covered ad nauseam, but searching has turned up nothing so far.

I'm running on a late 2009 Mac Mini with 2 gigs of ram. The first time I boot into XBMC I'm running at about 30% memory. After a few days of coming in and out of sleep mode, I'm finding the memory is being used up to almost 80-90%, and thing's are somewhat getting bogged down.
I find if I exit and re-enter even without rebooting, the memory usage returns to 30%.
I'm using Confluence on 9.11. Short of upgrading to a new nightly, does anyone know what might be going on?

Thanks!