I think it may just be that my connection is bad, but it seems to be lagging--more specifically, as I write the characters, the cursor goes in and out (very fast) between the skritter paint brush the general mouse arrow--this problem really makes skritter much harder to use. Is this just me lagging, or is there a problem with the website? Thanks.

Are you using a mouse, or a Wacom pad? If on a Wacom pad, have you gone through the settings at: https://www.skritter.com/wacoms/settings ?

Have you tried multiple browsers? If not, I'd say give either Firefox or Chrome a shot.