my macbook was working fine last night. starting this morning it wouldn't boot up. it turns on, does the tone, shows the apple, and the progress indicator, but then just hangs eternally. i ran disk utility and verified the disk, it said it was okay. however, i did get an error when i tried to verify/repair permissions. something about there being no valid packages. i then booted up in verbose mode and it keeps doing this same message every 10 seconds, so i suppose this is where it is stuck: Code: Jan 16 20:28:54 bryans-macbook com.apple.launchd (com.apple.mDNSResponder): posix_spawnp("/usr/sbin/mDNSResponder", ...): No such file or directory the only part that changes is the number in brackets after the first "mDNSResponder". it increases by one each time. i am a college student and really need my laptop to be working. i am using my roommate's to post this right now. please help.