I stopped because it always took me like an hour to set up a profile, and there were no profiles for it ANYWHERE. Also if it went wrong I'd have to spend ages fixing it... Mine always seemed to get stuck as well, and when I say stuck I mean stuck. 7 Hours running into a rock in the middle of Un'goro is not a good sign. It did me good though... Got me a Rogue from 46-60, that was Bytebot though... I'd only get IS again if Bytebot started again and I don't think thats gonna happen. Think I still got a few months IS subscription left, I bought 3 months in mid august so I'll have around a month :P I didn't like Openbot though, it ran to a vendor after every freakin loot and i prefer them to make their own way to the corpse, like Bytebot did. I might try IS again, glider is okay but it has some annoying bugs and it looks very bottish.
I do enjoy the support you get with Glider though and I haven't a clue about the IS scripting, people say it's easy but I've never seen a guide on it and I don't understand it :P
I deleted my IS when I found that if you run it then you run WoW without using it when it's installed you get banned because they detect it, and I do not always want to run WoW with IS.