Why are my letters spaced out in Microsoft Publisher?

In a Publisher box, the text in several of my lines (all before a hyperlink) is getting widely spaced out. I have already looked at kerning and tracking, but setting it to normal (or honestly making any changes at all under "character spacing") doesn't have any effect on the spaced-out lines.

What else can cause this, and how can I fix it so that the space between all the letters is consistent?

Thanks!

2014-05-07T08:35:10Z

Thanks, but I should have mentioned that I tried changing the fonts too. Still no changes. Any other thoughts?

tumbleweed_biff2014-05-06T15:52:29Z

You are using a proportional font which automatically adjusts spacing to file the line whenever the next word would cause a carriage return.