Problems with the engine scripts

[fred]

It's a 8-way Xeon with 8gb ; the highest load so far was yesterday evening when there were about 200 users trying to register at the same time and load jumped to 30 after which the server could not be reached and had to be rebooted; at that time there were hundreds of ispcp-serv + ispcp-dmn scripts running in the process list.

But the thing is that we are getting those corruptions (and my perl handywork to detect and copy back backups...) happen actually all the time when there are 20-50 users being created and the load is around 1.