Anyone else keep having the "Your cart is empty" box appearing and covering up the search box and most of the My Account tab.......

No. What browser are you using? Have you tried clearing the cache then refreshing? Are you using any content blockers that could be causing this error?

I've had that a couple of times in the last week or 2, never hangs around long though, mostly fixed by a reload of the page

It's been occasionally doing that ever since the relaunch for me (using Opera). But it always disappears on the next reload, as Aliasalpha says, so I never thought much about it.

I never had that issue, and I'm using Opera as well.

Fire Fox 3.6.13 ... and other people are having the problem as well then :(

I'm using Chrome, never seen that glitch.

Same here.