OK, I know somebody is going to point me to the obvious but I've searched every menu and can't find it!

Today, for no obvious reason, my 905 stopped logging textx like 'conversations' and it's back to plain old boring text view - why would it change (only thing I can remember doing was changing the theme?) and more importantly, how do I switch it back on?

Many thanks,

Don't ask how or why but they are back? I didn't do anything, one minute they weren't, next time a text came in it was on the menu So rest the grey matter... unless it goes again!