I'm able to configure Sitefinity CMS for use with ActiveDirectory for administrative logins following instructions found on the Sitefinity knowledgebase.  This is what I have for a configuration:<connectionStrings>    <add name=IowaDomain connectionString=LDAP://iowa.uiowa.edu /></connectionStrings>....<roleManager enabled=true cacheRolesInCookie=true defaultProvider=Sitefinity>    <providers>        <clear />        <add connectionStringName=DefaultConnection applicationName=/ name=Public type=Telerik.DataAccess.AspnetProviders.TelerikRoleProvider, Telerik.DataAccess />        <add name=Sitefinity             type=Telerik.Security.ActiveDirectory.TelerikADRoleProvider, Telerik.Security             connectionStringName=IowaDomain              connectionUsername=******              connectionPassword=******              groupMaps=ITS-CTS-Sitefinity-Admins             domainName=iowa.uiowa.edu        />    </providers></roleManager><membership defaultProvider=Sitefinity userIsOnlineTimeWindow=15 hashAlgorithmType=>    <providers>        <clear />        <add name=Public             connectionStringName=DefaultConnection             type=Telerik.DataAccess.AspnetProviders.TelerikMembershipProvider, Telerik.DataAccess enablePasswordRetrieval=false             enablePasswordReset=true             requiresQuestionAndAnswer=false             applicationName=/             requiresUniqueEmail=false             passwordFormat=Hashed             maxInvalidPasswordAttempts=5             passwordAttemptWindow=10             passwordStrengthRegularExpression=             minRequiredPasswordLength=1             minRequiredNonalphanumericCharacters=0 />        <add name=Sitefinity              type=Telerik.Security.ActiveDirectory.TelerikADMembershipProvider, Telerik.Security              connectionStringName=IowaDomain             enableSearchMethods=true             attributeMapUsername=sAMAccountName             connectionUsername=******             connectionPassword=****** />    </providers></membership>The configuration appears correct (and if I replace that provider with a dummy provider that simply logs calls and returns correct data I can see that the provider's methods are being called), but after logging in all requests time out.  I can see that the timed out request is correctly authenticated -- it appears in the event log as authenticated with the proper credentials -- but no request ever comes back.Looking through the Sitefinity forums and around via Google I don't see any issues of this type reported.FYI - I have also verified that I can connect to the DB using the supplied credentials for it (which I've omitted above).EDIT:  Update -- same problem if I disable the Public providers.  The Sitefinity providers are still the default.Any ideas?
Problem configuring Sitefinity CMS with Active Directory
configuration
Setting the httpRuntime parameter executionTimeout to a larger value (600) seems to have solved the timeout issue.  Now I need to figure out why it's taking so long.