I've built an object, made of several different meshes, and just now I'm going around it, connecting parts, adding loops, merging verts etc and a lot of history is building up. In this case history is not important and it builds up and slows my system down.

It's not a problem to delete the history, but I think it's a fair question to ask why it is still building up when it's switched off.

cheers

gubar