John,
We had a server issue yesterday and lost a few posts. I just wanted to make sure this one had a response so we could help you if you're still having issues.
The Notice's you mention above are related to mod_jomProfileMenu and JomSocial itself. I'm not sure what jomProfileMenu is, or why it's throwing the notices, but if you can disable that extension temporarily to see if that helps, it may help narrow down the issue.
Also, if the page isn't loading fully, it's not because of Notices. There should be an Error someone on the screen. That will really be necessary to figure out what's preventing the page from loading.
Thanks,
Alex