Sounds like you didn't replace those cheap rubber rim strip that came with the wheels, get Velox rim tape and you will be very very happy.
Rim strips sometimes will move around and it might move enough to expose the sharp edges of the spoke holes, thereby popping your tube. Rim tape never move around since they are adhered to the rim, but there are many different materials, nylon, plastic, rubber and cotton. Velox rim tape is probably the best the there is, high thread count cotton, nice and thick to protect your tube. GET THEM!
Last edited by Squirrelli; 06-16-10 at 07:26 PM.