Hi whs and Frank1.
Thanks for your posts, any feedback is welcome.
Yes, I decided not to try partitioning again for three reasons:
1 The convenience it would give me is not really important.
2 Without Recovery DVDs I don't feel like being adventurous.
3 I had a few scares this last days (I forgot to mention a couple of BSODs).
I hope someone with similar experiences can shed some light, but probably it has something to do with this particular machine.