Price list regen

I have installed the price list add on in v2.09.

Question is does this take a long to produce?

I ask because the page seems to be refreshing itself automatically over and over again. Now this could be because it is going through every product in the store, I dont know?

Or is this a bug.

Page has been refreshing for a good hour now!

Seems to have sorted itself out now, must buggy 2.09!