Due to several compatibility issues (bugs!), we have decided to temporarily disable the WYSIWYG editor. There were issues with quotes (with some browsers), hyperlink functions, and it stopped the spell checker from working (which we have only just discovered).
This will render the posting text box back to the 'standard' type, as it was before the forum upgrade, but unfortunately, it does mean that url links will have to be entered, or pasted, manually, until the feature is upgraded and fixed, or possibly Sam can work his magic.
Apologies for any inconvenience caused.