run access database too slow

I have a access database, the data store in another server. This noon, one of our user is runing the access database too slow. Open the database and search the data, etc. It took a long time to come out, Any body has experience on it, why, we had etrust install on each user machine, is that cause this too slow? Thanks in advance.Is it Access front-end or Access period? If the latter, - wrong forum, though you might get some answers if you're a little bit more specific.