Blender 2.76 unpredictive freezes with 15.10

HI, the subject is in the title : does anyone have the same issue?
I can't predict when it would freeze for almost 10 seconds each time.

I use ubuntu 15.04 64 bits, not a RAM problem (24 Go ) nor a proc issue since it's not overloaded.

Hi,

You got something on your scene or this is just an empty scene that freezes?

There's some meshes and textures; could it be made by refresh calls to image datas ?

There's some meshes and textures; could it be made by refresh calls to image datas ?

Could you please attach some minimal blend file which reproduces this behavior? Thanks.

I might have pointed it: it seems the freezes occurs with blenders autosave option (?), but no rpoblems with cycles or blender renderers; Else blend4web works great on another computer with the same file (debian7 64bits) …