I think it's a pretty common problem, I recall I did a poll on here when ours was acting up, and out of 17 Spider owners on here at the time 11 had had problems with the roof. The good news is 4 were fixed first time, and most got fixed relatively quickly, and seem to have stayed fixed. We were unlucky, I think, it took months to fix ours but seems OK now. It's definitely a relatively common issue with these cars - all 3 dealers we spoke to, and ARUK, were well aware of it, and how to fix it (although faulty/sub-standard motors meant that fix didn't work the first few times!). Good luck with it, I hope it doesn't put you off the car for good as it nearly did for us!