I have been having the same 'interesting' noices from the air-vent (central on the dash). I unscrewed and padded the edges with simple pachaginf foam (and glued).
Two left to go ... the Sony stereo front cover that comes standard (to my knowledge), I seem to have the #1 button jumping with joy all the time (rough roads). I think I will need to unsrew this as well and make sure the spring is 'extended' enough not to allow this.
The last one which is absolutely anoying, is some kind or rattle on the driver's back seat door. I dont know what is causing it, but is sounds like something loose is moving about. I will probably have to pull the cover of, but before I do something like that I will probably get my partner to drive while I sit like an idiot in the back seat and see if I can pin point it better.
On the subject, does anyone know were I might be able to get the workshop manual for the 156 2.5 v6 (veloce) ?
I know it comes as a cd-rom... anyone know if I can actually download it from someone ?
I you have it, please msg me, I promise I have things to excange with you.