Can someone possibly explain why I can no longer mine on Slush's pool, is this error related to the DDOS? Im using GUIMiner with these flags ( -v -w 256 -f 40 ) on my HD7970. I get the below then it just hangs, I can mine my backup fine but since earlier today I cannot mine slush.

2013-06-20 00:55:23: Listener for "Smerks Slush" started
2013-06-20 00:55:25: Listener for "Smerks Slush": api2.bitcoin.cz:8332 20/06/2013 00:55:25, started OpenCL miner on platform 0, device 0 (Tahiti)
2013-06-20 00:55:25: Listener for "Smerks Slush": api2.bitcoin.cz:8332 20/06/2013 00:55:25, checking for stratum...
2013-06-20 00:55:25: Listener for "Smerks Slush": api2.bitcoin.cz:8332 20/06/2013 00:55:25, no response to getwork, using as stratum
2013-06-20 00:55:25: Listener for "Smerks Slush": api2.bitcoin.cz:8332 20/06/2013 00:55:25,  No JSON object could be decoded
2013-06-20 00:55:35: Listener for "Smerks Slush": api2.bitcoin.cz:8332 20/06/2013 00:55:35, Failed to subscribe
2013-06-20 00:55:37: Listener for "Smerks Slush": api2.bitcoin.cz:8332 20/06/2013 00:55:37, IO errors - 1, tolerance 2