I do not know if this is part of the same problem but here is mine, which I find quite similar.
Sometimes, when I add an album to my iPod from my PC downloaded music (not through iTunes Store), I get iTunes add each separate song in its own album. The albums here all have the same name.
So I end up having 14 separate and identical albums on my iPod, each one containing a single track - very annoying.
What would help, and why is that occurring? Note that it doesn't happen always (with each album I add), but more than enough to keep me pissed off at iTunes.