|You could also have a corrupted template file. The Normal.dot file.|
You could try to create a new clean template,
but be aware that removing normal.dot causes Word to create a new BLANK one,
so you lose ALL of your default settings such as AutoText entries, custom toolbars, and macros and will have to recreate them.
To get a new clean template:
Close Word and do a search of your computer for normal.dot file and rename it. Something like normal.old.
When you launch Word, it will look for normal.dot and since it can't find it, it will recreate a new clean one.
Be aware that on XP the normal.dot file is a hidden system file and may not show up when you do a search for it.
If you are unable to find it,
Go to My Computer
Click the Tools menu
Choose Folder Options.
Click on the View Tab
Put a check where it says, "Show hidden files and folders"
and uncheck "Hide extensions for known file types"
and "Hide protected operating system files".
If you still can't find it, look here:
C:\Documents and Settings\<your user name>\Application Data\Microsoft\Templates
Once you have a new Normal.dot start adding your entries a few at a time and see what happens.