[Pharo-users] development image memory use: 180MB in Pharo 2 vs. 40MB in Pharo 1.4.....

I've been developing in the same Pharo2 image for a couple weeks and its now 180MB. I use the same development habits as in Pharo 1.4 but there the image would only be about 40MB. Using SpaceTally I can see that I have 40 MB of Arrays. And 10MB of Bitmaps. 8MB of Floats, Strings, & OrderedCollections. My domain objects comprise about 20MB of the image. Is there a way to check for memory leaks over a long period of time? Thanks Paul