I am getting a random web part error, it works one refresh and then not the next:
Web Part Error: One of the properties of the web part has an incorrect format. Windows SharePoint services cannot deserialize the Web Part. Check the format of the properties and try again.
The web parts have been on the site for a long time, and I have checked Micorsoft Support, http://support.microsoft.com/kb/826786 . And it is not a permision error becuase it has been this way for a long time. The only thing changed in regards to webparts was going into Site settings > Web Parts > New and selected some webparts that were not in the list and I think I also Checked the ones that are having this random error and clicked "Populae Gallery". Any body have a clue?