Visio 2010 - Zoom out and export deformes shapes

[mono]

Hi folks.

I had Visio 2010 64-bit edition installed and everything worked fine. I had to re-install windows and since then whenever I zoom below 300% the angles and lengths become deformed. This isn't much of a problem but when I export to a PDF it looks horrible. 



The second pic is with captured from Visio with zoom at 400% and it's still a little skewed. I've installed Visio 2010 SP1 but no change.

Any ideas? Thank you.