Today Google gave us an answer about why the frontpage of our site is not indexed anymore and it doesnt have any pagerank anymore. Somehow "we" requested the frontpage to be excluded from its indexation while we never requested that. Besides that we dont use any robots.txt to exclude pages from its indexation. What I state before is that I think Google is not that honest with its search engine. Besides that we are a huge competition for Google I think that they took it out. Or it can be that there is a bug in the software of Google. So now we have to wait for 6 months to be reindexed again. We never excluded the frontpage... I hope they will get the frontpage back asap...