As for combining threads etc there is a new upgrade coming up from the software that seems to include merging.
Am just testing it now and spell check seems to work ok for chrome but as you say not in Firefox - I wonder if that is anything to do with the recent Firefox upgrade.
Probably best then to turn them all off in your profile.
Am wondering if the spellcheck will be present in the new software upgrade. The only trouble is we have no idea which version of Xenforo we are using - bizarrely there are no indications at all in the admin, on this site or even on the package bought in the first place. If anyone knows how to tell - it would be a help.
Thanks for talking me through that - any website I try to type in other than a big corporate one seems to come up with an empty square.