Scrolling through code is delayed

Group, 
When working in WDSC, I try to scroll through my code and the mouse scroll 
is delayed.  The scroll acts as if it is thinking about scrolling and then 
takes off, jumping several lines.  For testing, I use the keyboard arrow 
keys instead of the mouse to move through the lines, again, the same issue 
- a delay in moving lines.  I reboot the pc and make sure that only WDSC 
is running, and still the same issue.  I'm running XP, SP2, keep current 
with all the WDSC updates ( and maybe this is my problem), I've only 
noticed this in the past couple of weeks.  Also, have 1GB of ram on this 
pc. 
Has anyone else been experiencing this very annoying issue? 

Diane M Mueller
infosys5@xxxxxxx