Maybe here are some other users of the tool "acronis trueimage", which I use to make images of my current installation.
When you install "intrepid ibex", you will have to take care of the following case:
You need to make the partitioning before you install intrepid - for example with a gparted live cd - and also format them with another program. Then, you can install intrepid, but take care not to check the "format" checkbox for the partitions, you want intrepid to be installed on! Intrepid can be installed on clean partitions without formatting it another time - the maybe shown messagebox isn't important.
The reason for this is, that when you make a normal installation using the intrepid partition program to format it, acronis is not able to make an image of them anymore! It causes an error and acronis says, you have an invalid file system on it!
The reason for this error is, that till intrepid, ubuntu formats the ext3 - Partition with 128 I-Nodes. Intrepid (as also Mandriva 2008.1 and Mandriva 2009.0 where this problem also occurs) formats with 256 I-Nodes.
Acronis Trueimage (which in the safeboot version is a linux tool!) can only handle the old formatting-version of ext3-partition!
When you take care of this, you can use trueimage 11 to make image backups of your intrepid installation as I did.