As for memory usage and out-of-memory, AFAIK Marble doesn't know if it's using real RAM or virtual memory (correct me if I'm wrong), so if Mentalist get oom, that would mean Marble is occuping around 1GB memory, so of course something is very wrong. If I'm correct, only one drawback from exceding physical RAM (256 MB) into virtual memory (768 MB or whatever ammount user format it to) should be huge slowdown.

If I'm wrong and Marble, by some flags, use only physical RAM (and trigger oom when 256 MB is exceed), is such a behavior necessary? V We got vmemory exactly to avoid oom, slow working is better than doesn't working at all.