That's the main problem with Taylor at full back, his defending when someone is running at him isn't great but it's not a great deal worse than Simpson's and he can do good things - he made a great goal saving header at the back post when it would have been easy to head it past Krul, think it was just before Yakubu hit the bar - and his offensive capabilities are obvious... but he is the most likely in the team to drop a complete bollock and cost us a goal.
Yeah, the back post header was what prompted me to make the comment.