So I've never been so bad at missing people point blank with enchanted crystal arrow before. I swear they are going right through champs, some of them even heading in a straight line at me.

When I mentioned this to teammates some of them tell me i suck but some have said "Ya it's been glitching for me too"

Has anyone on the forums here had problems with ECA lately? It's happening a few times a game where it's travelling through people.

I've seen it end prematurely when it was about to hit an enemy player. It was odd, and everyone on my team was like, "wtf?"

I've been having problems with lots of skillshots, lately, so maybe this is related. They are disappearing mid-air, sometimes not even doing damage (very noticeable with Sivir), and some other bugs, such as Blitz' hand. It only stuns the target or bring them just a bit closer to me, not all the way.

Yes.
I made a thread and people agreed it happened to them too.
It also happened to some other champion's spell. I forget which. Rammus taunt I think..

Seen multiple times where people walk through walls - happening alot recently - maybe somehow its related (collision detection and all that).

maybe lag? =/

Wards can stop ECA, this post is directed at the 2nd poster.

I've noticed this has been happening with Morgana's snare as well.

Ya i've seen this happen with a lot of skillshots. Also, some skillshots aren't even showing the animation anymore. I noticed that half the time I use Sivir's boomerang I can't see it at all.