Valentino Rossi admitted that the British Grand Prix weekend was 'a disaster' throughout and that Ducati is struggling to resolve his problems.
The seven-time MotoGP world champion's tough 2012 season got worse still at Silverstone, where he could only qualify 10th - 2.1s off the pace and over a second adrift of team-mate Nicky Hayden - and finish a lonely ninth.
"A very difficult weekend for us," Rossi told the official MotoGP website.
"In the dry we were always very slow. Except for the first practice in the wet, the rest was a disaster."
Rossi had an exhaust issue in the race, but said there was much more to his disappointing performance than a technical problem.
"After three laps I'd broken a pipe so I also lost some performance, but the problem is not that," he said.
"The problem is that we don't fix our problems and Silverstone remains a bad track for me, like last year. We have to work, we have to improve our pace and hope that in Assen we can be better."