Yes, I've grabbed the mrtgs for memory usage, and at about 9:30am yesterday free ram plummeted on the box, and cleared itself up at about 12:30 or shortly before I started looking at it. There are a few times a day when free memory gets very low, but they don't correlate with cron jobs...
I've tried tuning the following parameters in apache: MaxClients 50 MaxRequestsPerChild 10000 dropping from 150, 0 respectively. The server doesn't host any high volume / usage sites and spends most of it's day counting sheep so I'd rather the (presumably) extra memory allocated per child and auto-cycling children in case of memory leaks. I'll watch this for a few days and see how memory usage on the box compares then report back.
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