What you describe -may- be fallout from not having an accurate system time set. When I am working with some of my Arm Single Boards without batteries.... I get something that sounds like that when I forget to have ntpdate set to run in rc.conf.
Modern browsers -really- like to have the same time as the servers they are connecting to, if they don't match it seems to cause some of the security to fall out. Perhaps try verifying that dates and times are all set up correctly?
