I own a 2010 GSA and have done 50000 km with it. Previously, I owned a 2007 GS and a 2008 GSA. I have driver almost 200 000 km on these 3 bikes so I consider myself an experienced rider.
Have this same terrible problem with the 2010.
In fact, not only this pining is not very pleasant, this problem actually almost caused me a few (too many) accidents where I had to leave at an intersection and the bike stalled on me because of the famous misfire.
Last summer, I left my bike at BMW dealer (Moto Internationale in Montreal) and they did a 850 km road test (no, I had not given them the permission to do so, but that's another subject!), changed the sparked plugs, the coils, the battery and engine synch... No change.
I on my side, tried a few things, including reducing or using higher octane, no result.
The bike will misfire cold, hot, well, all the time and a few times during every ride.
This is BMW's (dealer) answer: this is normal on the DOHC engine and you need to adjust your driving technique.
Thinking of trading it for a 2009 but too lazy to switch all the farkles.
Unstoppable my .... Unacceptable would be the better word here.