How long can an update go?
Apparently a search engine update can go for as long as it wants to. The Google Jagger update has gone on since 9/22/2005, and affected tons of website to boot. Undoubtedly many sites went up in rankings, but many others suffered.
The biggest problem with this update has been the sheer amount of time it’s taken. With an update taking 60 days, that doesn’t leave much of the year for those who lost traffic. Of course this iis of no concern for Google, but people who make a living online are aware now more than ever of the need to diversify their traffic streams. Only a diverse traffic stream can ensure a website of success.