Simple javascript related denial of service that primarily affects Internet Explorer. Version 6.0 was tested and stayed unresponsive for over 3 minutes. Firefox does not appear truly affected as it seems to recover although it may freeze for a short period of time.
A pre tag with the style element white-space:normal; crashes Internet Explorer 6.0 if the pre tag contains two or more 'single' tags (for example, <span />). The bug was tested with Windows XP SP2 and Internet Explorer 6.