We just launched a small file browsing application that was created in .Net 3.5 with an AJax interface. Check it out here [url removed, login to view]
The problem we face is if the browser stay open for around 20 minutes and then the user clicks on a file (to download), we get a .net error message "Object reference not set to an instance of an object". I believe this issue may be session related.
Whatever the solution is, it is important that user remains in the folder they are in if they don't touch their browser for an extended period of time.
The developer who worked on this had a quick fix but he has connectivity issues and I cannot afford to wait longer.
This project is also an opportunity for me to work with a future .net developer on other projects as we do get projects.
I have the source codes. Quickest and most qualified bidder will be chosen.