Sorry for the adjacent replies, but just thought I would update this for others affected also. I have worked around the problem as suggested by the official forum posts by turning my graphics settings to minimum and seem to get fairly stable connection for up to a couple of hours before crashing now. It seems that having my 5 set to run on a 2560x1600 monitor is partially contributing to the issue however due to the memory requirements for the resolution, so I would guess this is less likely to be affecting people with fewer addons, lower graphics settings or 1920X1200 or less monitors. No update as yet or even confirmation as to whether this is a true memory leak issue however and I find it pretty annoying that despite having a high end system in order to play at high settings, the .exe itself can not manage this...