I've noticed over the last couple of evenings that my ADSL connection comes and goes for no apparent reason. This is a right royal pain in the whatsits as I am never sure whether IE is really looking to open a page or if it is about to bom out. It can literally be fine for an hour, then the line drops and then it comes back within 5, 10 minutes or possibly hours.
Any ideas what could be causing this and that the best method is for diagnosing the specific cause ? When it happens my network seems fine, so I don't think it is the router.