Very strange problem with Iphoto Plus 4

[madmega]

I use Iphoto Plus 4, for a couple of years, and i always recommended to friends, but since a few weeks i have a strange problem.
It began when i tried to load 30 jpg's that were 500k each, it took a while to load, so i opened my taskmanager (win2000) and i shut down the program.
I also rebooted, but since then it acted weird.
I cannot open more than 3 pictures (jpg, bmp or others) at once, if i open for instance 10, it takes like 5-10 minutes to open them all.
In the meantime when i wait, and check with taskmanager, i can see that 10 IPE.EXE files are opened, this explains the long waiting.
When everything is loaded, there is only 1 IPE.EXE file left.
I checked this on my brother's pc, all the pictures load right away, it is not checkable to see if it opens 10 times.
I reinstalled Iphoto plus, i also tried te remove the ini and the cfg files, registry lines, but nothing seems to help.
What am i doing wrong, i really really really love this program, it is one of the most important programs on my pc.
Can anyone help me ?