Notes single logon sometimes hangs

Hello, I’m testing Notes 6.01. So far I’ve noticed that the NSL Service sometime hangs. If you open and close Notes a few times a day and you are using the NSL feature, you may have noticed that Notes sometimes hangs while starting up. That is because of the NSL service. If you kill the nsl.exe process Notes will continue starting but you have to login manually.Is this a known bug ???

Subject: Notes single logon sometimes hangs

Was this an upgrade from R5 Single Logon? Please verify that the following value does not exist in the registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

GinaDLL=ngina.dll