Research done.....

I've updated to Diablo now.

Still big problems.

Make no changes on the n800 apart from WiFi connection settings.

Selecting from default list of websites....

try facebook - no problem
try wayfinder - couldn't access
try wikipedia - no problem
try wayfinder again - no problem
try facebook again - couldn't access
try google - no problem
try facebook - no problem
try wayfinder - couldn't access
etc.....

Is this simply the n800 struggling with my network ?
Is there anyway for testing throughput ?

For the first 6 months my n800 has been fine via my network, now it's not....

Any clues/hints ?