stolport
We need to know more! Tell us the version of Windows and whether it is up to date. What version of Tiscali? Have you uninstalled Tiscali to see if that fixes it?
Is it really random, in that you can't be sure that it will behave or misbehave? Or do you mean that it does it every time and is therefore predictable but unwanted?
These in addition to the questions above.
waiting in expectation.... fobs