Originally posted by Razze
Then you probably won't notice that much increase in performance. But anyway you will learn a lot about linux (and your computer) in the process.
I think your file system error is because the kernel does not have in-kernel support for the filesystem you are using, and it cannot load the modules as it cannot read the filesystem where the modules are located. This can be solved with mkinitrd (if you know how to do, that is. Unfortunately I cannot help you on that one), but also by compiling in-kernel support for the filesystem for your /boot and base directories ( / /etc /usr/ and the other system directories). It is usually a good idea to use a well supported FS for these (ETX2 or EXT3).
I agree with you that it is good to learn what's happening in our system.
I suppose you are right, I use Reiserfs, as it seems that I was given the impression that this is a faster FS (I guess I am wrong here), and even with the default kernel, it says something like can't find ext3 filesystem during bootup.