From the console logfiles, written as the login screen was beachballing:
7/24/11 7:34:38.726 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root
7/24/11 7:34:38.729 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root
7/24/11 7:34:38.730 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root
7/24/11 7:34:38.732 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root/Library/Preferences/ByHost/.GlobalPreferences.0017f2080314.pl ist
7/24/11 7:34:38.734 AM sandboxd: ([100]) kdc(100) deny file-read-data /private/var/root/Library/Preferences/ByHost/.GlobalPreferences.0017f2080314.pl ist
7/24/11 7:34:38.736 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root
7/24/11 7:34:38.738 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root/Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.739 AM sandboxd: ([100]) kdc(100) deny file-read-data /private/var/root/Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.741 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.743 AM sandboxd: ([100]) kdc(100) deny file-read-data /Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.744 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root/Library/Preferences/ByHost/.GlobalPreferences.0017f2080314.pl ist
7/24/11 7:34:38.746 AM sandboxd: ([100]) kdc(100) deny file-read-data /private/var/root/Library/Preferences/ByHost/.GlobalPreferences.0017f2080314.pl ist
7/24/11 7:34:38.748 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /private/var/root/Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.749 AM sandboxd: ([100]) kdc(100) deny file-read-data /private/var/root/Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.751 AM sandboxd: ([100]) kdc(100) deny file-read-metadata /Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.753 AM sandboxd: ([100]) kdc(100) deny file-read-data /Library/Preferences/.GlobalPreferences.plist
7/24/11 7:34:38.754 AM sandboxd: ([100]) kdc(100) deny mach-lookup com.apple.CoreServices.coreservicesd
Do any of you guys have similar entries?