Disappearing Themes on my.MSN

      This seems so trivial.  But I just have to ask.  Has anyone 
encountered a problem while running Mozilla on "my.MSN.com".  I will 
load a "theme" or "color scheme", and all will be fine for a few days. 
Then, the next time I go back to "my.MSN.com", the screen will be white 
and all the formatting will be "messed-up."  This doesn't happen with 
Firefox; or IE either for that matter; but who uses IE, I mean really? 
I would use Firefox exclusively, but there are some websites that print 
out better with Mozilla.  Any help here would be appreciated. If this is 
a stupid question, then I appologize in advance.  Oh yeah, I'm using 
Mozilla 1.7.7;  but this has been an on-going problem for quite a while. 
  It's just annoying to have to click "change color", choose a new 
theme, click "OK", and then continue what I was doing; and then have to 
do this every few days.

                           Thanks in Advance,
                           Perfessorrollo