On 2008-11-13, the SourceForge.net Service Operations group finished the deployment of performance fixes for ViewVC and relaunched the ViewVC annotation feature for CVS and Subversion (which had previously been disabled for performance reasons). In conjunction with these performance fixes, we have confirmed through direct testing that the end-user reported cases of repositories not rendering under ViewVC (particularly the 'log' page, which is very resource intensive) have been resolved. There are no known issues related to ViewVC performance at this time.
If you have any follow-up questions or concerns, please submit a Support Request at [https://sourceforge.net/projects/alexandria/support/]
Director of Operations, SourceForge.net