We have recently moved offices from a site where ADSL was unreliable, to a new office in the City of London (that's UK!) where we now have New 64-bit W7 PCs with IE9 - and a leased line (10Mb on a 100Mb bearer). We had hoped that the Internet access trobles would disappear. We have a freshly-installed infrastructure, and our original Small Business Server 2008.
Internet access is now generally lightning fast - hooray! However, sites that usually work sometimes return the 'Internet Explorer cannot display the webpage' page. Click the 'refresh' button, and the page appears instantly.
I have a 'ping test' utility which, for instance, pinging bbc.co.uk, returns <1ms responses continually, but with random 'spikes' of 5ms once in a while - none of which seems to point at a service provider problem. Their technical people are very helpful, but cannot see any reason for the problem.
Is there an issue on our local network? How do I tell?