Text editors

I have one Moodle server on Bluehost.com that has started to strip out font size tags from the pages. I have the same courses hosted on several servers and they all use to look the same.

Here are links to the same course hosted on two different sites:

http://nwonline.nwresd.org/course/view.php?id=2 << font size works

http://moodlecommons.org/course/view.php?id=5 << font size broken

If you look at the source of the broken page, it looks like this:

<b>Welcome to Digital Photography</b><br />
<span style="font-weight: bold;"><br />
Your computer is your darkroom.</span><br style=
"font-weight: bold;" />

Normal page looks like this:
<font size="5"><b>Welcome to Digital Photography</b></font>
<br /> <span style="font-weight: bold;"><br />
Your computer is your darkroom.</span>

This problem just popped up. Since it's worked fine with the same installation on Bluehost in the past, I'm thinking there must have been a configuration change on the server. Ideas?

Paul