Save and Undo bugs

Is it me or does Unity 2.6 suffer from a bug that effects ‘Save’ and the another one that stops ‘Undo’ working.

I seem to b wasting so much time from lossing work, and not being able to use the undo button correct…

And yes I know about being in preview mode etc.

Is it just me or is there something I’m missing?

didn’t have any kind of general problem with 2.6, neither on Vista / win7 x64 nor on osx 10.6