pyscripter to slow

[Gigs_]

I have some problem with pyscripter.
Sometimes when I type pyscripter get to slow (i type 10 chars and pyscripter 
needs 5 seconds to complete this). This happens mostly on deleting some chars.

It is very frustrating.

Does someone have same situation?

btw
My comp is

amd athlon x2 4000 2mb cache
sapphire am2rd580adv 3200 ati chipset
2GB corsair xm2
sapphire x1650 pro 256mb

windows vista