Ubuntu :: 11.04 Doesn't Complete Boot Up....makes Me Use Startx

I must have deleted a file or done something wrong because now when I start ubuntu11.04, my startup stalls at the blackscreen where it lists the output of current operations. Mine seems to stall at checking pulseaduio or stall at checking cron. I am not totally certain of the phrases but anyway, my only way to log in is to ctrl+alt F1 and sign in that way followed by startx. I copied some exact info down and here is where my computer usually stalls:

Screen says, Starting CUPS printing spooler/server [ok]
Checking battery state... [ok]
Stopping System V runlevel compatibility [ok]

This is the usual stopping stop for my computer.