Adding/Deleting resources or tasks is very slow.  On a 700Mhz RH-9.0 the
pause is in single seconds range, just long enough to render the Planner
unusable for anything serious.  I do not know how fundamental this is,
but the program has no chance of acceptance if it persists.

How to reproduce:  Nothing special.  Just create a new project, enter about
10 taks with average of 8 subtasks for each plus half a dozen resources. 
Allocate the resources, organize the dependencies.  Then try to insert a
task somewhere and the pause will be noticable.

I consider this a "critical" bug even though the program does not crash
because this is an incredible turn-off for any manager contemplating
putting his/her project on the line.