C#: http://conversations.nokia.com/2012/06/01/interview-with-mat...
Ruby: https://blog.twitter.com/2011/building-faster-ruby-garbage-c... (It was not good enough, they dumped Ruby)
Accepted answer? "Manual tracking of objects" http://stackoverflow.com/questions/2484079/how-can-i-avoid-g...
Google has 14 million web pages about Garbage Collector issues...