On 2/20/2012 5:00 PM, IVP wrote: >> Seems like my 20MHz crystal was not 20MHz at all > I've had one occassion where grounding the crystal case solved a > timing issue, so I routinely do that now. Whether that really was just > a one-off funny crystal, don't know I do this too. Often just a tiny bit of flux on the case and the solder=20 easily will stick to it. Also helps to keep the crystal from getting=20 pulled off the board accidentally , I have several broken crystals from=20 that. Mark --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .