Since our mysql crash the other night *might* related to increasing the timeout period recently, I've set it back to 15 minutes for the time being. Though we can easily handle the logged traffic for longer periods, transient search bot and other forum browsing activity spikes unpredictably on some days. That cache increase becomes a big memory hog when the bots are out, and I could see a major aviation event bringing the place down again absent the more conservative setting. In the meantime we'll be shopping for more memory.