Well, I don't actually have the same problem, I was just researching your problem when I couldn't find the library.
if you can, load up the package remove program (either from the Mandrake Control Centre or the KMenu) and check which version of e2fsprogs and libext2fs2 you have installed.
I suspect that your urmpi sources are not fully upto date, or you do not have enough of them and the newer libext2fs2 is not included in the current list of available RPM's for you to install.
Also, as a tip, if you get problems with missing libraries or files I wouldn't install from source unless you absolutely know what your doing. More often than not, enough there are RPM's you can install from urpmi sources that will solve your problem.
HTH