Access to Search facility

I have tried several times today to do a search for a particular subject but I can not gain entry. I usually do a search successfully at least once per day but to day no go. Can anyone 'please explain'.

Murphy's law still prevails. As soon as I had made the above post I tried again and was successfull.:?

Were you logged in at the time of trying the search?

Because if you weren't, you need to enter a verification code to enable the search to go ahead.

I felt I was and did not sign in after the original post on this subject. Any way no worries now.