During the last weeks a strange problem occured several times with my notebooks. Sometimes when I open up a notebook the content is completely messed up in the sense, that it is put into one cell. That means, that every cell I was able to execute independently is now gone and I am left with one cell. Even the "In[%]:=" and "Out[%]:=" are now inside the cell and the whole thing can't be executed.
Here is a example:
The Problem occurs randomly and does have nothing to do with the content. I guess it is some kind of formatting problem!? I use Ubuntu 12.04 and Mathematica 8. Pls help, fixing notebooks like this by hand is really tedious!
Thanks