After 5.0.1 update the iPad original seems to be a lot crisper for me. Still having probs with wifi modem Internet anywhere (Huawei), seems ok with normal wifi now with this update. Perhaps the issue is with a weak signal, it wasn't a problem before but what can I do.
I hope everyone else has managed to iron out their issues, let's face it, the iPad is still a dream machine and as a person who moved over to apple mac a year ago, after wanting to for years, ( mac mini and iPad original) they are still far superior to windows machines in the feel and speed. Perhaps these issues could be because of the volume of machines they now sell compared to before.