[Steph]

Thanks for the clear explanation Canuck - I've unticked the option to allow CCleaner to check for updates.

I don't generally allow programs to check for updates either (apart from Avast) so I double-checked the startup list in CCleaner as you suggested but nothing was running that I didn't want - Arraknid helped me clear this out some time ago and it's pretty short now. I'll check it from time to time to ensure things don't appear that I don't want running though. The only thing I'm unclear about is Java Update Scheduler - is it OK to have this running at startup?

Thanks for your help.

Steph