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Back in the days of using 12.2, IBM Notes 9 was in Beta and I have blogged about how I installed and configured this combination here.
With my move to 12.3, I was going to install the now GA version of IBM Notes 9. Given how impressed I was with 12.3, and all the additional software and customizations applied in 12.2 seems to transfer seemlessly to 12.3, I was naturally mildly surprised (and annoyed) that installation of IBM Notes 9 did not go quite as smoothly as Notes 9 Beta on 12.2.
Let me jump to the crux of the matter, one particular library (libjpeg62) has been removed from the media and default online repositories of 12.3. This libjpeg62 was previously in 12.2 and earlier versions of openSUSE. As such, IBM Notes 9 installer and even zypper were not able to install execute successfully.
Here's how I arrive at this conclusion and was able to successfully install IBM Notes 9 on openSUSE 12.3. While I have not tried this on the enterprise flavour of openSUSE (ie SUSE Linux Enterprise Desktop 11), should you encounter the same challenges, the steps below may be of help.