I suggest glasskin is adding stuff here to the skin stuff by itself. Milo changed the storage structure by using tupples what is more effective and Glass of course does not do that... Just my first thoughts.

As these are 3rd party skins that will limit our improvement there is a chance that someone should fix these skins to adjust them to our new pli improvements..

Use another skin or downgrade to the 2011-11-08 image.