Stray marks when marking up pdfs

[geraschenko]

When I'm marking up a pdf using the stylus, it sometimes happens that marks start appearing under the stylus even when it isn't touching the screen. This is extremely annoying, especially because the marks are often lots of tiny little dots that are almost impossible to erase.

I'm using ipdf (I don't know exactly which version). Does anybody else have this problem? Any ideas about how to fix it?

One thought I've had is that it could be that the stylus is too sensitive and is detecting pressure on the tip even when there isn't any. But I can't think of a good way to test this hypothesis. The easiest thing would be to use a different stylus for a while, but I don't have an extra.