AVR-Chat

Ok, back to the original subject..

I've got my board's fuses set, so I'm in pretty good shape, but only 
because I thought to use the old studio 3.56 to run the AVRISP.

Both AVRISP and Jtag refuse to go into fuse setting mode under studio 4.
Avrisp is acting pretty normal now, running, breakpointing etc.

I still have USART1 interrupting me on TXD, when that int isn't enabled!
CLI stops it, but of course I had a few other things going on, and that's 
got them all hosed now too.
I wrote 00h to all the USART1 config regs, and yet the ints keep coming.

Appears to not be a jtag problem, I set a pin trap for it and it still 
happens when the chip is running on it's own.
WTF?

Re-checked the int vector table against a M128 data sheet to be sure I 
hadn't scrambled the ISR vector points.
No errors.