CCrider, ready for the busted seatpost bolt! Good for you. The last time this happened to me, I lost some parts and couldn't use that seatpost again.

Shepp, the non-drive side spokes always have less tension than the drive side spokes because of the dish. This can lead to loosening. It's not too difficult to retention the loose spokes. All you need is a spoke wrench and some patience. A truing stand will make the job much easier, but it's not absolutely necessary. Nice to have backup bikes though, and it's not a bad idea to let the bike shop get your wheel right if you aren't iinterested in doing it yourself.

dynodonn, I have had many rims fail in this way, but I more often wear though the braking surface and get a split in the rim there, where the brake contacts the rim. A friend was *****ing about his rim breaking like the one pictured above because it was on a bike with disc brakes. He thought the rim would last forever because he didn't have rim brakes. "It's a Mavic! WTF!?" He was steamed, but I told him stuff happens, an indestructible rim would weigh 5 lbs. You don't want that.