Eclipse keeps moving my cursor while I type

So I'm using RSA (which is eclipse based), anyway, when I type, if I pause for a second, it will highlight any error, which moves the cursor so if I start typing again it will overwrite what's highlighted. 开发者_开发问答It just started doing this recently. For instance, if I type this line:

private static final String APP_ID = "

And pause before typing the rest (1235";), eclipse will highlight the text "APP_ID", so once I start typing again it will overwrite that text unless I manually move the cursor back to the end of the line.

Is there a setting to stop this?