Today I have come across the task to filter a Form Library where one of the columns - which comes from InfoPath form - stores the login name of the SharePoint user. Like DOMAIN\account. I needed to filter the Form Library documents for current user. First I tried to use the filter column = [Current User] - didn't work. Then I have found the following article on SharePoint Designer Team Blog: Data View / Data Form: Parameters You Don’t Know About I have created a DataView parameter called UserLogin: and used it to filter the Form Library: That helped.
This blog is about SharePoint and related technologies.