mebbe... we run on win2k at ubbdev and have scripts time out at the default 30 seconds, but then again only have a few sites on the server, plus I know what's installed on each so I'm not afraid of one taking them all down. As a web host you have no idea what sites might have inferior forum scripts installed <img src="https://www.ubbcentral.com/boards/images/graemlins/wink.gif" alt="" />
If they are running that internet accelerator server, it could very well be at a default of 10 seconds.
