Roland Schwarz wrote:

Currently the checkout or update hangs with the following message:

cvs checkout: [11:41:50] waiting for vawjr's lock in /cvsroot/boost/boost/boost/spirit/fusion/iterator/detail/joint_view_iterator

Is there anything that can be done about this?

No, this is already reported to SF staff, it seems: https://sourceforge.net/tracker/index.php?func=detail&aid=1448735&group_id=1&atid=200001 - Volodya