Sharepoint config LDF log is huge

Running into disk space issue on Sharepoint server. The LDF file of Sharepoint config is 25GB. Not good!

there are some other users who went throught this: http://mindsharpblogs.com/bill/archive/2005/01/14/181.aspx
http://boris.gomiunik.net/2008/10/sharepoint-config-database-log-file-too-big-reduce-it/

Sharepoint Search account

I have an error "Access is denied. Check that the Default Content Access Account has access to this content" in the search crawl of http://intranet

Apparently, the server can not access itself with an Cname alias. The "intranet" is indeed Cname DNS alias for the server. If you have this case you should read this.

http://harbar.net/archive/2009/07/02/disableloopbackcheck-amp-sharepoint-what-every-admin-and-developer-should-know.aspx

and this

http://social.technet.microsoft.com/Forums/en/sharepointsearch/thread/84f93fbe-f4a6-4683-b25b-b595b9006ad7