Ok well first it IS 4.5.X:
avr-gcc (GCC) 4.5.2
So that could be the first indication.
What happens is that after uploading the blink example the led stays on with no other lights blinking, it could be the delay bug you spoke of but I wouldn't know, I am pretty new to this. All I know is that it did work, then it didn't it's possible I applied an update to avr-gcc and thats what caused it to not work.
It is just the basic blink program from the examples I have tried to upload to the board.
The output file was too big to attach so I have pastebinned it: http://pastebin.com/QTnu4PLu