Unstable skin rendering

Hi all. I am not sure this is a Mac only problem. It seems like the the textures on the body is unstable - I get it in full resolution, all details of face and clothing is fine. Then, without warning, it becomes blurred for a while. And it then goes OK.

It seems only to happen on avatars (my own included), and never on objects (nor attachements).

Anybody experience this as well, and is there anything one can do to prevent it?

What you describe sounds like when the various textures are baked and the resulting texture uploaded to SL. In other words, nothing wrong. It happens once with each change of clothing.