The font on my ribbon is all blurred.
I have set the TextRenderingMode property to GDI but then when i click a group all options in the group all the tools go bold for a second.
This also happens on text of group box and tabs on tab control
I think I've seen something similar reported not too long ago.
Do you have ClearType enabled? If so, then I believe this was something we fixed, which should be included in the current hot fix. You can download hot fixes from the My Keys and Downloads page.
If you don't have ClearType enabled, or if you already are using this hot fix, then it's not the same issue I'm recalling. You may want to submit a support request so that a Developer Support Engineer can look into this in more detail. Please provide steps for us to create a sample to reproduce, or ideally provide a sample that we can run and debug that demonstrates this behavior.