On the listprojects view, and others where the status bars were in one of several columns, I was experiencing wrapping where each status bar took up three lines -- the front, the middle and the end. 

I'm on IE 5.2 on Mac OS X.  I was able to resolve it by adding the 'NOWRAP' attribute to the TD that contains the status bars in lines 2488 and 2489 of the draw_time_and_progress_bars() function.

Hope this helps.