Strange home network problem - Random website loading

Hi guys,

I have a very weird problem.

I have a particular website (www.sampleism.com) that will not load for me on multiple devices - or rather it will load sometimes and not others.

But - the site seems to randomly load depending on what device I am viewing it from.

EG - it loads on my laptop but not my phone - then, 10 minutes later it loads on my phone but not my laptop.

Some basic info:

Laptop - win 7
Phone - Android
Desktop - win 7

The problem started a month ago - my website (which I access all the time) stopped loading Intermittently. I thought my ISP or router was at fault so I checked some setting - they all seemed fine but the problem continued. It stopped loading on my phone and laptop too - it would still load via 3g so it must be a home router problem. It also loads from any other location outside my home (work, friends etc) I'm with BT in the UK.

Eventually my entire home network went down - this could have been due to me changing every setting on my router trying to fix the problem. Ooops

OK - so a BT engineer came today and installed a new BT home hub - internet connection is now fine but the problem persists.

The site loads just fine on my laptop for about 30 minutes but not my phone but then stops loading on my laptop and starts loading on my phone. Then loads on my desktop for ten minutes and stops on my laptop - you get the picture. Sometime all devices don't load, sometime just 1 etc etc

I'm really stumped by this so please help me out.

Thanks