A problem with comments & Tinea dubiella

hi, don't know whether it is me but I can't add comments (Firefox). It tells me I'm not logged in. I click on log in and as you can see I can post.

But when I return to the main page it shows me logged out so I can't reply.

I just wanted to thank Dave for his reply on the Beaded Chestnut. I'd like to thank Peter for the dissection of  Tinea dubiella (see below). Also thanks to everyone else who helped with IDs this year.

A happy New Year all.

Mark Griffiths, Garsington, Oxford