Hi guys and thanks for all these infos. You were right, i raised the memory a little and tried to cycle through the cache in more than a minute and i got the proper LRU behavior. I didn't knew about the 60 seconds limit for the LRU queue repositioning and it looks quite understandable to me now.
I'm doing a stress test with real-world conditions right now and it's working pretty fine; damn i like memcached ^^ Thanks guys.
