Hi. We found the issue with #1, you can also add a line break (BR TAG) to the beginning to fix as well.
As far as #2 I was unable to duplicate but I Am wondering if this is related to the text editor and if your text editor change (or you updated DNN when you upgraded to 3.0). I am still checking but from what I can see this has not changed at all in 3.0. I do notice though that for example you have to switch to 'Basic textbox' for question headers/footers if you don't want the editor to automatically add paragraph tags to the header and footer. I don't believe the previous editor did this, if you removed them in HTML it would remove them. Now though you must switch to the basic editor.
A few other small issues fixed in a recent patch. Here are more details...
Dynamnic Registration 3.02.00 Patch