WiFi connected, download fails

[mm]

Hi,
I've had my premium box for quite a while now and although i couldn't get WiFi to work with the supplied FW it worked okay when i installed the then latest software. Unfortunately i can't remember either of the software revisions.
I've just updated to 4110 but cannot get WiFi to work. I have also tried 4075,
4056 and currently have 3877 installed.
internet status shows - normal (connected)
Speed check shows a healthy transfer rate.
You Tube just hangs whilst looking for a connection and Plug-In downloads fail.
I can FTP onto the box using Filezilla without problems.

Could it be a router / port forwarding problem ? why did it work with an earlier
FW version ?

Maybe it's something really simple that i just can't see.

Any suggestions please ?

p.s. I've searched the forums and can't find anything related.

Thanks, Mark

[goran]

Settings -> Internet -> check the speed...

Which link are you trying to DL from?

[mm]

Update.
Problem was due to Internet settings / DNS1 not holding it's input.
I could input the values but they would always return to 000.000.000.000

For some reason or other it then held the settings. Now updated to 4110
and working as normal.

Thanks for your reply Goran. I would also like to add that your tutorial
has been invaluable, Thanks.

Mark