I do not touch my wp-config file or any mysql settings while posting i get this msg once everytime i post, wp-config file has no issue, if it has then how after few sec file goes ok automatically check my funny sms signature site.
Your site looks like it's connecting to the database just fine now. "Are you sure that the database server is running?" ...I'm guessing it wasn't if that error just popped up out of the blue. Might want to check with your host to see what's up with that.