I tried with both Atlanta and Crux theme and found:

1) Resizing with both Atlanta and Crux results in the title bar lagging behind 
the rest of the application, i.e. if you resize an app to the right (as 
described) the title bar will lag behind the main app window BUT in Crux it is 
more disjointed and has a higher CPU usage.

2) When moving windows around the CPU usage is higher with Crux theme. When 
moving a window I saw the following CPU usage:

Crux: upto 17%
Atlanta: upto 7%



General Comments
=================
I have noticed that Crux theme seems to suffer in terms of performance compared 
to Atlanta, for example, screen refresh (particularly when changing workspaces) 
is noticably worse with Crux. 

In addition to this last Friday I ran with Crux theme all day and noticed that 
performance suffered some degradation as the day went on but today I ran with 
Atlanta and performance was constant throughout the day.

During Friday and today the following applications were mainly open:
o 3 netscape
o bugtraq
o 2 terminals (one with 6 tabs)


Some other indications of poor performance with Crux I have noticed:
---------------------------------------------------------------------
o when you change from Atlanta to Crux there is an instant increase in CPU usage 
- for me usage went from 0.7% to 6% BUT changing back to Atlanta CPU usage only 
went from 1% to 2.4%
 
o resizing a window in Crux uses more CPU than in Atlanta (max 10% Vs max 5%)

o moving between different tabs in a gnome-terminal results in higher CPU usage 
in Crux than in Atlanta (max 6% Vs max 2%)

o changing workspaces (that have apps open in them) results in higher CPU usage 
in Crux than Atlanta (max 15% Vs max 3.5%)


Finally I noticed that you have to work much harder in Atlanta to get the CPU 
usage to rise - i.e. to provoke increases in CPU usage you have to do more (move 
windows, move workspaces, resize) with less time in between actions than in Crux 
theme.

A good example of the performance difference is in changing workspaces. Try the 
following steps:

In Crux
-------
o open a number of apps, including gnome-terminal, in workspace 1
o open a number of apps in workspace 2
o in gnome-terminal execute `top`
o switch between workspace 1 and worksapce 2 at approx interval of 1 second
Result = CPU usage starts to rise quite quickly and will hit 15% after approx 15 
switches

In Atlanta
----------
o repeat steps above
Result = CPU usage slowly rises and will only hit 3.5% after approx 15 switches.




