filesystem formatting progress bar frantically bounces back and forth

[Chris Lumens]

>   while i'm on a roll, on both the i386 and x86_64 installs, when i
> select the default partitioning (/dev/sda1 for /boot and LV for the
> root fs), the progress bar dialog that comes up doesn't slowly show
> formatting progress from left to right as it used to.
> 
>   instead, a progress indicator bounces frantically back and forth
> from left to right until the formatting is done.  is this a new
> feature?  it's kind of disconcerting.

It's just us not reading the output of the mkwhateverfs command the way
we used to.  Making it go slowly is a pretty low priority item right
now, given that there's plenty of other partitioning bugs to deal with.

- Chris