Friend asked me for Open Source Intranet system recommendations. Anyone has any good ones to share? Seen Drupal's, pretty neat?

The corporation I work for is investigating using SharePoint October 6, 2010 5:59 AM9 for both intranet and website/extranet. The business case for the intranet is pretty sound, and we have identified many applications that can and should be replaced by a tool like SharePoint October 6, 2010 5:59 AM9. We have been asked to look at a website refresh, and we’re actively putting together a business case to use SharePoint for the website.

We’ve given the marketing department a preview of the CMS and content approvals/workflow process and they are on board. Here’s my question. Has anyone had bad experiences in using SharePoint as a web site?

I would like to provide the business with a good list of cons to match the many pro’s. Not interested in recommendations of other CMS applications – just if you’ve had relevant SharePoint experience and have encountered some “gotchas” or road blocks, I need a devil's advocate. SharePoint - at least in my experiences, can have glitches that are hard for users to track down the causes of.

I've had a ticket in this week with my IT department regarding a Team Site (my own team's actually) that was no longer appearing on my list of team sites that I had access to, even though nothing had changed to my access rights. Now, maybe its my IT department more than SP itself, but it seems hard to track down a clear answer as to what happened.