Nick i have been though all the check your links and your on off page stuff, i dont want to get stuck in that debate again. I am no novice, its not a case of my wanting to rank higher and being disapointed, its case of a dramatic change of rankings. when you come almost last for your business name from first a few moths ago when i last checked. to come last for a term you are the only one in the world to have the exact macth, its more then a few broken links or so.
Yes the no-index stuff is a good point, but i checked all that, I have no no-index or no-follow tags at all, i have the basic robots.
I must also add, that I have destroyed the evidence and made a new site in my panic, i have also 410ed the whole sub domain
Gianluca, i had doubts myself as i have anouther sub domain that does not seem to be affected (hard to tell). but i just read on the google forum about someone who did have a simular problem or should i say thinks he has.