Created attachment 57284 [details] a case demonstrating the issues In the attached presentation, nothing is shown in presentation mode. (black screen without text). The presntation has white text on black background. Only a black background is shown. It look like a little something is displayed in the upper left of the screen.
@micrond: Thank you very much for your report! It's a pitty that it has not been answered earlier, but we have very few MacOS X users in the QA team at the moment. So sorry for the long delay! However, this problem is NOT REPRODUCIBLE for me with LibreOffice 3.5.4.2 (Build-ID: 165a79a-7059095-e13bb37-fef39a4-9503d18), German langpack installed, on MacOS X 10.6.8 German UI (Intel). Everything works for me as expected: all text is visible in presentation mode, just like in edit mode. It is possible that the problem you describe has been fixed in between (I remember a similar issue being fixed, but I can't find it for now, sorry). The other possibility is that this problem is reproducible only under certain circumstances, e.g. on MacOS X/PPC (I am on MacOS X/Intel) or on a special version of MacOS X. Therefore, could you please download the current release of LibreOffice (3.5.4 at the moment; this release contains many useful bugfixes, so you may want to upgrade to it anyway) and test if you can still reproduce this problem? This would be very very helpful. Thank you very much in advance!
Dear bug reporter, I am sorry but we have to close this bug report because the questions (see comment #1) which are important for handling this bug were not answered for 3 months now. Feel free to reopen this bug report if you can provide the missing information requested in comment #1. Thank you!