Hello there. I have been having this behaivour the last days... I can't really remember when it started, anyway, the problem is: the inactive memory seems to be always growing. It gets to the point where there is no free memory, and, in some cases, it seems that the OSX moves the inactive memory to the swap space (is that the correct name?) because I get free memory again. I don't remember installing anything the last days, but, as I said, I don't really remember when this all started. I have closed all the "unusual" programs, just keeping, for example, Mail, Safari and iCal open, and this still happens. So I guess this is something related to drivers or the kernel itself? It seems like a leak or something like that. The only thing I remember installing before this problem is the Crossover beta. I'm not sure if this started after this or not, but I believe so. I have already uninstalled it, using AppZapper, but the problem hasn't dissapear. I'll check the Crossover page to see if there is something else to do for uninstalling. Is there a way to check which process could be the one leaking memory? I have tryed the Activity Monitor but I can't really find which one could be the problem. I have Mac OS X 10.4.8 in a stock configuration Mac Pro, with 2gb more memory (3Gb total) and 2 HDD more (500gb and 200gb).