Oh yes
Up until a couple of weeks ago when I got a new iPad 4 I was using an iPad 1 and yes, I had lots and lots of crashes, and it drove me batty.
From my attempts to do multiple restores and to play with the settings to see if I could make my iPad 1 usable again I do have some advice.
First you have to accept that many newer, powerful apps will never run well on an iPad 1 and will crash constantly. The same is true for web sites that make heavy use of JavaScript or graphics.
Turn off as many iCloud functions as possible, especially photostream. Calendar/ Contacts didn't cause me a problem, but photo stream, apps that save to iCloud (especially art/ photography apps) and Notes did.
Only use notifications and location services on the apps where you really need or want them. It seems to help to eliminate as many background processes as possible to mange use of the minimal RAM in the iPad 1.
Try turning off JavaScript temporarily under Safari settings when you need to if you're getting frequent Safari crashes. It will limit the functionality of many sites, but if you need to visit a site where you're getting frequent crashes, it may help. I also agree with the previous poster about not having multiple Safari tabs open.
As you can imagine, limiting the iPad in these ways isn't ideal, and once I realized the iPad 1 just couldn't do everything I needed it to do any more no matter what I tried, I upgraded. I love my new iPad 4, BTW.
Yes, the iPad one worked beautifully 2 years ago, but now, with all the big retina apps and apps designed for iPads with 4x the RAM and a faster processor than the iPad 1 it just isn't true anymore.
My husband now uses the iPad 1, but it works fine for him as an e-reader, video streamer, and email reader, which is mostly what he uses it for. He is not a power user.