There appears to be a bug with replying to posts on member profiles and journals.

http://www.helpmefind.com/gardening/l.php?l=99.4895737&tab=32

I was going to nudge Zofia towards the nurseries page for 'Sonia', but the reply form won't submit.

Or rather the form will submit, but no reply content is added to the page.

The same thing occurred when attempting to post a comment on her journal.

Using Pale Moon 64 bit on Windows 7, if that helps.