Question : ASPX security error

Created a web site using VS.net 2005 using the Personal Web site template on my local dev PC. Configured it to use my SQL Server 2005 sitting on my IIS box. Works.  Copied the web site to the IIS server, and can't get the ASPX pages that hit SQL Server to load. The other aspx pages that don't hit the database load fine. I suspect the error displayed is a side effect error when it can't figure out how to display the actual error.

Here's the event log of the error, I'm hoping this makes better sense.

Event code: 4010
Event message: An unhandled security exception has occurred.
Event time: 2/13/2006 10:16:35 AM
Event time (UTC): 2/13/2006 3:16:35 PM
Event ID: a2ae90db65544b049c9fb201ace972d9
Event sequence: 5
Event occurrence: 3
Event detail code: 0
 
Application information:
    Application domain: /LM/W3SVC/743520676/Root-2-127843080252037888
    Trust level: Full
    Application Virtual Path: /
    Application Path: D:\sites\tom\
    Machine name: PICARD
 
Process information:
    Process ID: 3148
    Process name: w3wp.exe
    Account name: NT AUTHORITY\NETWORK SERVICE
 
Request information:
    Request URL: http://tomhirt.org/Default.aspx
    Request path: /Default.aspx
    User host address: 24.237.75.4
    User:  
    Is authenticated: False
    Authentication Type:  
    Thread account name: NT AUTHORITY\NETWORK SERVICE

Answer : ASPX security error

have you got datasources configured on the web server that match those on the dev platform?  does your sql server recognise the user accessing as from the web app?  what user is configured, and does the sql server permit that uyser to access from that (ie web server) location?

Cheers.