We all known that if we get links to a (generally new?!) website, we must to wait 2-3 months in order out website will gain more value in G serps... (because of the link age,etc) ... Now I got a reverse question .. if a website got let's say 5 incoming-links , all of them 2 years +++ , and then .. the website lost all those links, how fast the website will get down in google?! in the next day?! or after 3 months?
It seems it's pretty much the same for Link Profile leakage... 3-6 weeks.. somewhere in there. Once a page clears the SI (supplemental index) in say.. 12 months.. the back links would also expire... As far as some one taking it off of a page, I would imagine the reverse in link maturity would happen... IMHO though....
If it's also a link drop age then there is no link age algorithm ... then google CPU are to flooded with new informations, and they can't process everything in real time, lol
Depends on how fast google detects the broken link, the time it detected the broken links, the time your ranking will drop. For PR, it will only change in the next update.