Our Umbraco site crashed late last night, restarting IIS fixed it. However, when looking for the reason why, it referred in the stack trace (below) to a dropbox location (which we have turned off on our network). Is there a place in the Umbraco console that refers to this location that we can turn off or edit? The file that referenced the location was the umbraco\bin\umbraco.pdb file, which we obviously never edit, so it's assumed it may be something out of the box for Umbraco. Please advise...thanks.

at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection) at System.Web.HttpRequest.ValidateHttpValueCollection(HttpValueCollection collection, RequestValidationSource requestCollection) at System.Web.HttpRequest.getForm() at System.Web.HttpRequest.getItem(String key) at umbraco.UmbracoDefault.PageLoad(Object sender, EventArgs e) in d:\Dropbox\Dev\UmbracoSourcev4\umbraco\presentation\default.aspx.cs:line 185