I just got disconnected from a game of Dominion. I've tried to log back on but apparently I'm >20,000th in the queue. I think something is up with the servers. :/
I didn't lag at all today, but often teammates or enemies got disconected, It is a known Problem and Riot is working on it... well at least they say so.
I dont think that's only on EU West. I have also like 2 lagg spikes per game on EU East, and that has been happening since the last patch. Coincidence? I think not.