Sorry I didn't see this thread earlier, but here's the issue.
The org has three message editor interface types that we can choose from. The nicest of the three is "Enhanced Interface - Full WYSIWYG Editing".
That interface is not currently jiving with IE 10, and I'm betting that's what you have selected.
You want to go here: Settings>General Settings>scroll down to Miscellaneous Options
Select "Standard Editor - Extra formatting controls"
Click "Save Changes". Now you're GTG.
The org has three message editor interface types that we can choose from. The nicest of the three is "Enhanced Interface - Full WYSIWYG Editing".
That interface is not currently jiving with IE 10, and I'm betting that's what you have selected.
You want to go here: Settings>General Settings>scroll down to Miscellaneous Options
Select "Standard Editor - Extra formatting controls"
Click "Save Changes". Now you're GTG.