we got some huge problems this afternoon.. all is fixed now.
first our bandwidth was overtaken by one "friendship" crazy computer all day long (you can see our HTTP perf decrease all day long on the following GFX)
then we got one total IP breakdown on the backbone during ~2 hours (from 15-17h GMT) thanks to the flood & problem on cisco routers.
The server was okay, just the net connection was missing
[ GFX monitoring by EverTEST ]