windows 8 64 bit, gtx 750ti, intel hd graphics, core i3 540
Broken: I worked in 2.71
Short description of error
I was modelling front panel part for cd player, and at some point blend file just skyrocketed in size, it is very laggy and unresponsive, ram usage is full, what system has, and inside blender it shows that it uses even more, I have seen over 10 gb of memory usage. And it all is cause by one mesh, I appended it to the single file, please take a look.
blend file is huge (almost 1 gb), there is nothing in it, just a mesh with 7000 verts.
Exact steps for others to reproduce the error
here is blend file link: