Maybe someone can help me with this.  I did my first mining two days ago with Slush.  I ran it for about a day.  Now, the same exact command line gives me the following error:

 [2013-06-24 11:33:05] Started cgminer 3.2.2
 [2013-06-24 11:33:05] Probing for an alive pool
 [2013-06-24 11:33:06] Pool 0 slow/down or URL or credentials invalid


./cgminer -o http://api.bitcoin.cz:8332 -u username.workername -p password -I 12 --temp-cutoff 80

What gives?