Thanks.
On an unrelated issue, over the last weekend I found I couldn't log-on to Pprune using my MacBook at home using Safari.
When I tried to log-on Pprune came up with an incorrect password error message. I went through the rigmarole of changing it a couple of times, same thing. Cleared out the cache, cookies etc - same problem.
I can log-on fine using Firefox on the same machine, problem is only with Safari. No changes made to the set up between the time it worked and when it didn't.
Any ideas?