IBM have released a public beta of Lotus Notes 8.5 for the Mac. It seems a lot better than version 7, but after applying the OS X 10.5.3 update I found that I could not start Notes. The only feedback of a problem was in the system log: [0x0-0x34034].com.ibm.lotus.Notes maclauncher: unrecognized option `-psn_0_213044'
The workaround I'm using is to run the 'Notes' application from inside the application bundle. From the terminal:
There is a discussion on the IBM forums covering this so I hope it will be fixed in the next public beta: http://www-10.lotus.com/ldd/nd85forum.nsf/DateAllThreadedWeb/d1ef5d3d0a322049852574600046e61e?OpenDocument