Memory question. Apps saved files...

Recently got my 32gb iPad, greatest thing since toast! But after a week worth of using and browsing the app store and trying free games and apps. When i go to sync, I can see that there's 2gb of "other" memory being used. Even if i get rid of all the apps, movies, and music theres still that 2gb being used.

My question is, is that app preferences?? Because if i reinstall some apps the prefs are still there. How do i "prune" this memory?? It can't be the Notes or Pages files because 4 pages documents and 2 pages of notes aren't 2gb worth of memory.