Really like the DSG personally, I like the way it changes gear, and enjoy the experience of it doing so as often as possible, within reason. It's ......different .... Surges almost, as it changes, as if a bit too quick with the clutch on a manual.
But that aside yes it could be very annoying if it does not change gear efficiently.
There great on the upshift and pretty poor on the downshift, particularly when driving with a bit of enthusiasm. 
Er yeah, seem to remember being less impressed on the down shifts, her Golf had it, lovely car, long gone since. She wouldn't let me play too much 
It's just the sheer number of gear changes when pootling about that annoyed me. Pull away gently from the lights and it's gone from 1,2,3, before you even notice you're moving, then a few mm more throttle travel and it's back down to 2. Ease off and coast and it changes up a couple of times. I can't really explain why I hate it so much but all the frenetic changes up and down the box made it almost as tedious as if I was changing manually.
Technically, it's the perfect gearbox, of course (It was designed by Germans, so it must be

) but I found the driving experience awful. Not to mention the "paying to get it fixed" experience that seems to be commonplace.
Perhaps they should make one that block changes up and down 2 gears at a time, say, if you're just pootling?

That should give the development guys a headache.

Kevin