Small issue with workflow email notifications

Well been busy last week and couldn't update the blog, before a couple of days tow users called me complaining that they stopped receiving emails informing them that they have a new notifications that needs their approval, well to be honest I thought I have a serious issue because both users called in different time at the same day, I check the workflow email server setup and it is working fine, after a little investigation I find out that in some how both users preferences got changed, so I change it back as follow

-Once logged into Applications, go to preferences link in the Home page . - At the bottom of that page is the Header - Notifications, Email Type - Select HTML Mail (It was empty)

And every thing back to normal.

Fadi