We've made a couple of changes, notably to the web server software itself, that appears to have done the trick with the lockups. We have a secondary option up our sleeves just in case but it looks like we may well have fixed it.
For those that noticed no slow down for the last 90 minutes, you have Matt to thank for his excellent download software for UK TrainSim, which has now taken the load right off the server. Coupled with the extra RAM, the server is now flying again.
Steve.