Hopefully, this will be the last post that I have to make on this topic. The problem that I was having was that I was running out of memory when there was a lot of access in apache. The swap partition was being filled up, and eventually the machine just bogged down swapping.
Part of the problem was that LifeType is using a lot of memory. This is being fixed in the 1.1 release. But, I don't want to upgrade to it until it is more stable.
In the mean time, I have just reduced the number of threads that apache can start. The worst thing that can happen is that when there is a lot of access, some requests may be denied. At least this is better than having the whole machine go down.
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