I was surprised when I first started reading this forum how often shutter problems were mentioned. With all of my semi-serious photography (hobby, not pro) being with 35mm, it strikes me that this may be due to "shutter abuse" ... What I mean is with 35mm film, there was a definite cost to each push of the shutter button - for film and processing, that with digital, this cost is essentially $0.00 (cost of the flash card spread out over 10s of thousands of shots). This leads to many more pushes of the shutter button for everyone from snapshot takers to serious hobbyists to professionals.
Has the design life (in number of shots) of the SLR shutter increased at the same pace? I doubt it. 100,000 shots seems like a lot for an amateur photographer, but with each shot being "free" - is it, really? Is the shutter a weak link in current DSLR design?