crwdns2933897:0crwdne2933897:0

iPhone 3G Cydia certificate issues

I just jailbroke my iphone 3G but I get this error

Block Image

when I try to open Cydia and I can't use it properly. I need a fix if there is one. I already tried changing the date and time and yet still this is here

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0