Det er altid den sidste ene procent som tager 99% af den totale tid ...
It's always the last one percent that makes up for the 99% percent of the total time ...
At the 9.3 release, two public properties are exposed that you can set for the standard progress bar. These properties are the alignment, or location, of the progress bar on the map; and whether to enable or disable the progress bar. More properties may be exposed at future service packs or versions. We will use the enable/disable property later in this article, when we replace the progress bar. Let us look now at setting the alignment property, which will introduce a client-side approach we will use throughout this article. [...]
Read more: http://blogs.esri.com/Dev/blogs/arcgisserver/archive/2008/11/07/Customizing-the-map-progress-bar-in-the-9.3-Web-ADF-_28002E00_NET_2900_.aspx