Question : Send/Receive error in Outlook when Sharepoint Discussion Boards/Doc Libraries connected to it

After connecting various Sharepoint lists to an Outlook client, after a while, they just stop working, giving the following error message:

Task 'SharePoint' reported error (0x80070005) : 'You do not have permission to view this SharePoint List (Portal Campus Events). Contact the SharePoint site administrator.  HTTP 302.'

I have found that it starts working again if I log into Sharepoint in Internet Explorer and do a "Send and Receive" in Outlook while still logged in.  So, it looks as if you have to be logged into Sharepoint for this feature to work.  That doesn't seem right; if you have to log into Sharepoint then what is the point of syncing your lists to Sharepoint?  Is there a way around this?

Answer : Send/Receive error in Outlook when Sharepoint Discussion Boards/Doc Libraries connected to it

Have submitted this question three times now, can't get so much as a response from anyone.  I give up.  What are we paying for again?