Hi,
After creating a new search service and starting full crawl, some of object crawled successfully, others(most of) return:
"The SharePoint item being crawled returned an error when requesting data from the web service. ( Error from SharePoint site: An unexpected error has occurred"
So, after doing great number of incremental crawl, it can successfully crawl other objects, I even can't imagine these conditions...
But when I change some properties and must do "full crawl" - I again see same error.
p.s. my sharpoint is in production and I can't re-create web-app :-(