If I have a multi-line comment in a cell above the freezepanes row, and scroll down a couple of rows, the comment is cut off at the freezepanes point. I'm seeing this behavior in Excel 2007, and don't recall that it was a problem in Excel 2003. The entire comment should appear when you hover over the cell, and that has nothing to do with the placement of the cell relative to the freezepanes row or column. Is there a workaround? And can someone confirm whether it's fixed in Excel 2010?
This will occur whenever the comment size is larger than the frozen pane.
A workaround is to increase the row heights of the frozen rows such that the entire comment fits. It will then be fully visible within the frozen pane.