Here's the scenario - Mrs A sends an email to everyone in a group (it's a PTA), and her message is underlined. She doesn't know why - she didn't underline it when she sent it. Everyone in the group emails each other throughout the day and all emails that are sent attached to the original arrive with all the words underlined, ie., we all seem to have caught an underlining bug from the original email.
Any ideas? I probably haven't explained it very well.