Reports Running Very Slowly Under Vista

I've noticed that my databases seem to be sluggish when running under
Vista but I didn't realise how bad the problem was. I have a report
in one database that is based on a complex query. This report takes
10 seconds to appear on the screen under XP and 22 seconds under
Vista. Other reports in this and other databases are much slower as
well. Has anyone else noticed or experienced this problem when
running databases under Vista?