The latest patch is Dragon Age: Origins 1.05. Applying this patch is highly recommended (GOG.com, Steam and Origin users do not need to install the patch).
Numerous issues are fixed in Qwinn's Ultimate Dragon Age: Origins Fixpack mod (but be aware that it is incompatible with many other mods).
Check the "Disable Intro Movies" box in the configure tool available in the launcher, or edit the config file manually:
The Ultimate Edition of Dragon Age: Origins sometimes crashes upon exiting.
If you are having issues logging into Dragon Age: Origins with your EA Account it is most likely because you have special characters (like "#") in your password which the game does not support.