Inserted PDFs become Pixelated in Powerpoint

[fongchun]

Hi,

I apologize if this has been asked/resolved before, but I haven't been able to find the thread or find any answer on the internet for this strange problem that I have.

Basically, I am making a poster in powerpoint and I've generated a bunch of PDF images using Inkscape. When I import these PDFs into powerpoint, they import fine and are displayed as vector images. However when I close down the powerpoint and then re-open it, I notice all my PDF vector images have now been "rastorized" and become pixelated! It's such a strange bug...has anyone encountered such a weird bug and have any ideas on how to fix this?

I am using Microsoft Powerpoint for Mac 2011 (i.e. Mac Office 2011) and I've just fully updated the Mac 2011 to 14.2.5. My Mac OS X is 10.7.5 which should be equivalent to OS Lion.



Any ideas would be greatly appreciated. Thanks,

Fong