Hi
I have somewhat the same problem with my Powerpoint 2007 as this guy:
http://www.justanswer.com/microsoft-...en-plenty.html
Except it doesn't only occur with a comma. When I write in a textbox or a shape (speech bubble etc), Powerpoint sometimes forces a line break in the middle of a line (not in the middle of a word) without any reason whatsoever. It occurs out of the blue, suddenly there is a line break in the middle of a line and I can't do anything about it. It looks like it turns on word wrap in the middle of the textbox, shape or whatever I am writing in.
Part of the problem can be solved using the language settings->japanese->allow latin text to wrap in the middle of a word. When I ran this procedure, the checkbox was unchecked, and when I checked it, the line breaks disappeared, just as I wanted. BUT: now I am stuck with the another problem, namely that powerpoint wraps the text in the middle of the word which naturally breaks the word into two at the end of each line. The only solution to this problem is doing the language settings->japanese-trick, as far as I can see after searching the web. And if I do that, if I uncheck the Allow latin...-box I get the same problem I had in the first place, with the line break in the middle of the line.
I hope someone can help me with this.

Kind regards
Mikkel Clemmensen