IIS6, ASP, Clustered Servers, and Access Denied to virtual directory

Here's the situation:

Have two Windows 2003 Servers running in a redundant cluster array(let's call them LIVE-01 and LIVE-02). They have virtual directories set up on them to access a file share that's running on a UNIX-based machine. The virtual directories are set up to "Connect As" a specified user. The servers are accessable individually or from a load-balancing address.

When I browse to LIVE-02 individually, everything works fine. The ASP code that accesses files on the virtual directory can access the files and folder great. When I browse to LIVE-01, I get the ASP error code for "Invalid Username and/or Password". The thing is, the account used to "Connect As" is the exact same username and password. It has been baffling me for over a week and I have not a clue what else could possibly be the issue.

I'd be happy to answer any other questions anybody may have. Any pointers as to where else to look would be great. I'm coming across nothing online (hopefully just not missing a really obvious search statement...).

I only work with little piddly servers, this is unfortunately out of my area of knowledge