When I used Vue on XP, the purge took some time and increased the available resources in the end. Now that I use Vue on Vista, I don't need the purge anymore, so I don't use it (anyway, when I tried it, it didn't seem to have any noticeable effect). The memory management seems to be much more efficient in Vista than in XP. In Vista I don't notice what was typical in XP that the resources keep decreasing for no apparent reason.