Anyone else have any experiance with the CP2102 chipset adaptors with the arduino IDE??
Yes, lots of people have problems getting it to work out.
Most of those adapters have a pin called "RESET" which has nothing to do with resetting the Arduino. You have to find a via on the breakout board that is connected to the DTR pin of the CP2102 and carefully solder a wire to it. Or, manually reset your arduino when programming.