Hmmm your operating system shouldn't make any difference on your usage of the functions here. Try this Jest...clean out everything from your temp internet file and then clean out your cookies and your history. Then reboot your computer and try and use the options here. If that doesn't work post here again and I will try and find you some answers. :>)

Dono if this applies to you but some people are having troubles with McAfee.  LINK  Also, XP in all its wisdom and fixes and patches and bandages has now got its own firewall (it came with one of the SPs).  I am updated with all of them and have no problem, but I have done some tweaks (forgotten along the way).  The major one I think was to disable windows firewall and use my own.

Until you find a fix you might try copying the formatting tags from this image onto a sticky note.  Then when you want to post something, just copy them, open the HTML panal and paste them.  Then switch back to the fancy editor, erase the line of XXXXXs and start your message.  You may have to leave at least one X until you start your messate just to anchor the formatting.  Its humbug, but at least it might have your formatting.

 

If it is McAfee, or a firewall problem I am sure it will get mended soon.