Hi Christian,
What version of MOSS are you working with? SharePoint doesn't use hight of the browser window in order to decide how many rows of data will be displayed, at least not that I've seen so far.It's configured in the view based on various factors; i.e. number
of items to show, filter, folder, etc.
Can you provide more details on the list and/or the view?
How many items do you have in the list so far and how many are being displayed?
Can you re-produce this issue on any other lists/sites?
Can you re-produce this issue from different computers? What browser are you using?
Pman
http://www.pmansLab.com/