Simon - no I know OpenMSG doesn't have time to take on dotLRN testing, don't worry. But we do need common tools and I was just speaking in the broad sense.
Of course a lot of the base packages dotLRN is built on will be tested in the OpenACS sphere as part of our 4.6 release effort but the dotLRN package stuff itself needs to get tested by other means. Fortunately Sloan's exercising the hell out of the Oracle version as you know.
Now ... that doesn't mean that OpenACS community members aren't going to offer to help test and fix the PG version (of course they will, we've seen a lot of this already). It does mean that you're off the hook for organizing it and that it's not part of our OpenACS 4.6 release effort.
