menu.lst problem

Hi,

It seems to me that every time I do some upgrade via apt-get, maybe it's kernel upgrades, my menu.lst entries changes from /dev/sda1 to /dev/hda1. As a result, the system don't find the disk. It occurs to me like three times already. Why does it keep on getting changed incorrectly? Is there anyway to fix this at the time of the upgrade? Because I don't think I been shown an option to keep my menu.lst or anything like that. 

It may be worthy to note that I'm running on the testing branch.

Timothy