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
If they are running that internet accelerator server, it could very well be at a default of 10 seconds.