Comment 7 for bug 1186856

I am having the same problem. Running Linux Mint Olivia AMD64 bit version with Nvidia GTX 66 Card version 319.23.

 1 out of 4 boots comes with "greeter Error" . I think it has to do something with the Nvidia driver. It worked with the Nouveau Driver okay. I also have a partition with Ubuntiu 13.04 latest and Cinnamon as desktop GDM and works okay.

 One thing I had to do was run a script program to fix the Splash screen on bootup. It took forever and was coming up in VGA mode. Would sit for 2 minutes at login (Terminal mode) then finally boot. Got on the forums and found a fix in Ubuntu forum. Plymouth splash screen fix.
 I don't know if this is associated to this problem but it comes up quicker and doesn't give greeter error as often.