This was a known issue in the Beta 1 and still occurs: If you open the Address dialog and then drag an address from the “To:” group to the “CC:” group or vice versa, Notes will hang and must be Force Quit to recover. A Hang.log was produced, but no crash log.
HANGLOG:
Date/Time: 2008-09-16 17:59:24 -0400
OS Version: 10.5.5 (Build 9F33)
Architecture: i386
Report Version: 4
Command: Lotus Notes
Path: /Applications/Notes.app/Contents/MacOS/rcp/eclipse/plugins/com.ibm.rcp.base_6.2.0.200808151631/macosx/x86/eclipse
Version: Lotus Notes 8.5 (8.5)
Parent: launchd [214]
PID: 365
Event: hang
Time: 10.64s
Steps: 71