JAVA applet failed to load - error

Hi there. This is my first post here. So I'm not sure if this is the correct place to post this. Please advise if not. Thanks.

I use a website (www.adslguide.org.uk) to test my internet speed - it is with Demon 2Mb. The test page normally loads (a java applet) a little program which checks the speed. Up until recently this has always worked. Now it doesn't - I get a 'java applet failed to load' message.

I have checked search pages, other forums (including the one on sun's website - java.com) for advice on what to do - and have tried many suggestions but cannot fix the problem. I have tried other sites with java programs and none of them work. I've racked my brains to try and remember if I installed anything which may have altered settings but cannot remember! I have tried uninstalling, reinstalling - no joy! I've checked my setting via tools, internet options, security (and advanced) to see if everything is enabled - and it is!

 

I've also tried different browsers from my IE6sp2 such as Opera and Firefox - JAVA doesn't work on these either.

It's only now I'm without java that I realise how much I must have utilised it before.

I haven't a clue how to get it back. Can anyone help please.

 

I use a Dell Dimension 5000, Pentium 4 3GHz, 1Gb Ram, 160 Gb HD, Windows XPsp2 with IE 6sp2

Many thanks in anticipation.

p.s. I'm no expert when it comes to computers