Just to give you an update...
Looks like there's a big boo-boo with my ISP, lots of people are affected. Because of the way IrishAirPics.com and WorldAirPics.com are set up IrishAirPics.com is working ok (I think) but WorldAirPics.com has a few issues.
I could put a temporary fix in place but then my ISP would think there was no problem with my account and think they had rectified the problem so I'm leaving things as they are for now so the problem gets properly sorted.
Sorry again for any inconvenience caused.
Regards,
Frank.