.mdb lock ASP.NET

Hi all,
I have an application (say X). I have placed them in two folders ( A and B) in the web server ( i.e I have creted two folders A and B in the wwwroot of the web server).I am doing download in the application X.In the application I am accessing the download page using the url URL and URL
In both pages ( download.aspx) I have a button which causes the download to occur when pressed.The download causes a .mdb file ( say M.mdb) to be created in the respective folders of the urls. The download is done in a folder ( c:\inetput\wwwroot\A\X\Download and c:\inetpub\wwwroot\B\X\Download. respectively) I have given ASPNET user the required permissions in both the folders.
Now when I try to download,the first time the download occurs fine ( say from the url URL). When download is tried from the other url ( say URL an error is generated and I find that the ldb file has been created in the download folder of the second url)I cannot find what is craeting this mdb to be created in the second url's download folder when I have first downloaded from the first url.
The virtual directories of the two applications are different .Only the IIS in the webserver is same.
Any help in this topic will be highly solicited.
Thanks in advance
Jay

This problem is not specific to ASP and .MDB files. I had the same problem when trying to load balance users using Citrix and .MDB files. The .MDB files are fragile (as opposed to MS SQL tables). In some cases when the same .MDB file is being accessed by two sources (two servers), or similtaniously creating two .MDB files the locking error will occur. When I called the Microsoft help desk, they blew me off by saying, "Access files are not mission critical." Then they charged me $100.