XP SP2 and Downloading Files

[mffl]

We have numerous pages that allow users to download textfiles. To invoke the
File Download Dialog, we use ASP, FSO and ADODB Stream. It worked fine in
SP1. In SP2, however, once downloading is done, the window that opened the
File Download Dialog automatically closes. Any idea what's causing this?
Where can I find information on SP2 in relation to FSO and ADODB Stream?

Thanks.