Our connection to the internet was playing up so my wife went and asked Vodafone what to do. They gave us a grubby old cable to test … which turned out to be a dud cable.
So the declared the problem too complex for modern techniques to solve. They then gave us a cool new, smaller modem which looks like it would go faster.
The modem/dongle/gadget even comes with its own software installed. So it uninstalled our out of date and uncool (I assume) technology and installed its own version.
It then worked really well for a bit but started mucking around by creating new connectsion to itself and saying it was already in use (kind of like a worker booking a meeting to get out of work I guess).
So I went in and changed random settings for a while (I told my wife I was using complex IT problem solving techniques). Now it seems to work perfectly.
But who knows if I have improved the settings or just scared it into not wanting me to change anything else.