Bug: y axis labels end up having multiple fonts. Example included

Some of the y axis labels end up having different fonts:

    > http://s3.amazonaws.com/oylb/wlsn_qm.png?20060717232235

    > In the above image, 7 and 7.5 have a larger font. I'm using
    > matplotlib 0.87.3 with ubuntu

Bizarre. Are you using usetex? It doesn't look like it from the
fonts. Does it help to flush the ttf cache in
~/.matplotlib/ttffont.cache? Is it possible you are making a call to
set the fontsize somewhere and are just picking up selected elements?

I'll need to see some code to help debug this one.