Your speeds are low or you have a virus . What is the speed that you use can you tell us ? I also used to get this problem and I used to tell me self that I was a test of my tolerance .
I have a 4mb connection with BT but get aroung 70-80kb a sec downloads. My Anti-virus is up to date for sure, its got to be something else - any ideas?
Sometime you might get that error if your computer and connection time out before the page loads. This can be caused by a number of things but is generally due to the service being over crowded at that moment in time and that is why you can reach it a minute later.
The internet your trying to view may be down, the internet may have a large volume of people trying to access that site causing it not to load.However, if its doing it frequently i would make sure you complain to your internet server providor.