I am having trouble editing an anouncement in 3.03.05.  I can create them fine, but when I go to edit one, I get the message below.  The only fix is to completely delete the announcement module and then add it back, which is not really even a solid workaround

DotNetNuke.Services.Exceptions.ModuleLoadException: Input string was not in a correct format. ---> System.FormatException: Input string was not in a correct format. at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at System.String.System.IConvertible.ToInt32(IFormatProvider provider) at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider) at System.Convert.ChangeType(Object value, Type conversionType) at DotNetNuke.Common.Utilities.CBO.CreateObject(Type objType, IDataReader dr, ArrayList objProperties, Int32[] arrOrdinals) at DotNetNuke.Common.Utilities.CBO.FillObject(IDataReader dr, Type objType, Boolean ManageDataReader) at DotNetNuke.Common.Utilities.CBO.FillObject(IDataReader dr, Type objType) at DotNetNuke.Modules.Announcements.AnnouncementsController.GetAnnouncement(Int32 ItemId, Int32 ModuleId) at DotNetNuke.Modules.Announcements.EditAnnouncements.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---

I was never able to get this working so I picked up Advanced Announcements 4.0.4 on SnowCovered
http://www.snowcovered.com/Snowcovered2/Default.aspx?tabid=242&PackageID=4917&search=&pagenumber=0&sortby=&tagid=

It's not perfect but works well enough for my clients needs.