Bad purchased Boxster?

[urban]

I'm sorry, I have the rest of the service history, but I don't have the invoices:

15/9/99 11K miles - small service
15/10/01 18K miles - small service

And I have the brake fluid changes with each service except the first one.

Thing is, I'm a bit afraid that the solenoid/actuator problem isn't very common, and that it will be hard to find out where the problem is coming from. I hope to get news from the workshop today. I've read a couple of posts about it, but I couldn't find anything about the reason it happened (I'm hoping it was only because the car wasn't driven that much). I'm planning to use the car regularly (as I don't have another one), and probably about 7500 miles a year, so if it was because the car wasn't used regularly it probably won't happen again.
Has anyone had the solenoid/actuator problem? Did you need to replace any other (costly) parts?