a possible bug in the game

I've been having a problem with my champs movement in the game and thought I will post it to see if its just me. I've been playing LoL with my friends and was having alittle problem with my champs moving differently maybe the new patch is making me lag but I have never had any lag problems in league. The problems I had were my champs were moving towards the tower about 4 times when I was clicking away from the tower , other problems were with the autoattacks and last hitting, I know I did last hit but the coin animation doesent appear so I suppose that I did'nt get the money for my last hit and also sometimes the auto attack animation doesent appear sometimes. last game I had my champ went left when I was clicking right. Maybe my league is just lagging but it never happend before so was supprised. Some of my friends had the same problem so I thought I should inform someone on the net. If its just me I guess I should get a new computer but until I can understand why I guess I will wait for a month or so.