I recently installed Morrowind on my new computer, operating system is Windows 7, and I noticed a rather peculiar aesthetics issue.
It seems that there is a lowercase "s" in front of alot of the stats.

Some screens of this issue:
http://i733.photobucket.com/albums/ww335/wakawl/ScreenShot0.png
http://i733.photobucket.com/albums/ww335/wakawl/ScreenShot1.png
http://i733.photobucket.com/albums/ww335/wakawl/ScreenShot2.jpg
http://i733.photobucket.com/albums/ww335/wakawl/StrangeGlitch.png

Honestly I have no idea why this is happening. It did not happen on my old computer.

I believe its due to a "unclean" mod. Now, I don't know if simply unchecking the mod in question will fix the issue or if you have to clean the mod.

Thanks for getting to my issue; I will deactivate each individual mod and see if it makes a difference.
Also, do you know where or how I can "clean" my mod?

Edit: It turns out it was an unclean mod.
Now I just need to learn how to clean it.

Well, there are a few options. The enchanted editor would be a good tool for it, and in the long run, probably the best. If you are okay with command lines, TES3CMD would be a good bet.

The other options are:

GMST Cleaner- Easy, and works well
TESAME- Probably overkill for this, so I wouldn't use it unless you are adventurous.
TESTool- You could use this, but you will have to google which options to use, as there are several which do not work well.

The last option is GMST Fix, which is just an ESP that should be loaded last in your load order, and will change the GMSTs back to where they should be, no need to clean. I would not recommend this for two reasons:
1. You will have to know how to change mod load order, if any unclean mod gets load after it.
2. If a mod changes a GMST it edits purposefully, GMST Fix will overwrite the change.

So, lots of options. If you want a quick and easy fix, I would use GMST Cleaner. If you are okay with spending a little time, I would recommend either TES3CMD or the Enchanted Editor.