Warty slowing down

[wild madagascar]

Hi,

Today for the first time I experienced a slow down with Ubuntu Warty.
Well, my colleague, we are running Ubuntu Warty on every one of our PCs,
already informed me on slow down of his system particularly when he run
Evolution. Today he informed me of that once again and for the first
time I experienced it I myself. Anybody had experience of such slow
down? login out did not help at all. I had to restart the PC.

TIA 

Didier