Problem: When we originally wrote "SharePoint alerts will not open in Outlook or appear to be corrupt" the reported problem users were having was that they got a SharePoint Alert or Alert creation confirmation e-mail but they couldn't open the item in Outlook (but they could in OWA, etc).
Background: The issue is mainly faced by Outlook 2007 users who are running Exchange 2003 as their backend e-mail server.
Solution: "SharePoint alerts will not open in Outlook or appear to be corrupt" suggests that you can try to repair your Outlook 2007 instance, or even run the Office Diagnostics utility (Start>Programs>Office 2007>Office Tools>Diagnostics) to find issues with your Office 2007 installation.
A few users have reported that they have successfully gotten alerts working by disabling cached mode, going back into their inbox, then re-enabling cached mode. There is some risk of having to re-sync the entire offline contents of your mailbox (this could take awhile on a slow internet connection). Other users have reported that re-building their entire mailbox cache by deleting their existing Exchange Mailbox and reconfiguring the whole mailbox in Outlook 2007 can work as well.
Problem: I changed my WSS 3.0 site them to the "Simple" site theme and now when I access the site over a Secure Sockets Layer (SSL) or https:// connection I receive a pop up which I have to click through warning that some of the content I am accessing is not secure. If you access a site using the Simple theme in an http:// connection you will not see any warning.
Background: We have found a coding error made by the Simple theme designer that when you apply the theme in the context of an https:// connection you will receive an error when your browser renders code on the page that directly references http:// content.
Resolution: Change your site theme. We recommend not using the Simple theme for WSS 3.0 if you require a secured (https://) connection with your SharePoint site.