Connection issues here too starting from an hour ago
[2000-01-01 00:04:14] Probing for an alive pool
[2000-01-01 00:04:14] Pool 0 slow/down or URL or credentials invalid
[2000-01-01 00:05:14] No servers were found that could be used to get work from
[2000-01-01 00:05:14] Please check the details from the list below of the serve
rs you have input
[2000-01-01 00:05:14] Most likely you have input the wrong URL, forgotten to ad
d a port, or have not set up workers
[2000-01-01 00:05:14] Pool: 0 URL: http://stratum.bitcoin.cz:3333
[2000-01-01 00:05:14] Press any key to exit, or cgminer will try again in 15s.
[2000-01-01 00:05:29] Pool 0 slow/down or URL or credentials invalid
Tried rebooting the miner and my router just incase.