Since it is only 3 days old, I would re-partition the first hard drive and re-install.
My personal favorite partitioning scheme for a home workstation currently is:
/ - 3 to 4 gig should give you lots of room for lots of software
swap - 128 MB max
/boot (only needed if / is other than ext2/ext fs) - 20-100 MB
/home - the rest of the drive.
Then you can put backups in /home, install a diffenent distro and not format /home, etc. Keep stuff not actually in the system (update packages, downloaded stuff, etc. in the /home directory.
Learn the command line and Redhat Rescue proceedure in order to be able to handle disasters in case it happens.
At least, re-installs of Linux are much faster (but Mandrake does a Windows thing and removes the updates if you use the package manager so updates take longer) than Windows because there is only one re-boot to do.
An O'Reilly article: Proper Filesystem Layout
Stay in your user account and su - to administer your system. Sit on your hands and read carefully at least 3 times what you typeed while root to be sure you don't do anything stupid.