here is my 2c.
lube don't do nothing. It stopped mine creaking temporarily, as to whether it is actually bad (as suggested by some above), I can't comment.
I have had my master cylinder replaced. That fixed it.

That was 1-1.5 years ago.
Clutch has now begun creaking again, warranty set to run out in January. Have also had passenger side door actuator fail recently.

The problem I have is that the creaking has continued even after master cylinder has been replaced. This should have been the be all and end all of the problem....