Hover over thread

I like the little preview that appears when you hover over a thread in the forum as it gives me a clue as to whether the question is a) one I’m capable of answering or b) one I’d like to try answering.

Unfortunately the preview is rather brief - about 3 seconds - which means having to juggle the mouse pointer around the screen to make it pop up again so that I can read the rest of it. Is there any way of increasing this delay to about 10 seconds? I can’t see an option in the various profile setting pages so I guess it’s set globally.

What do others think? Would a 10 seconds delay be acceptable? Too long or still too short?

P.S. Is it just me, or has the double-line spacing been reintroduced?