Quiet period runs out, resets and builds remain on the build queue

Since upgrading from v1.225 to v1.252 none of my builds leave the build queue and actually begin
building. I have to manually force the builds to start.

I am currently using v1.253.

Each time the quiet period reaches the end it simply resets to it's full value all over again with
starting a build

Some observations:

• I am pretty sure than when a quiet period is not set the builds happen OK.
• Some builds I have which run overnight seem to not have be affected by this issue. (Could be due
  time builds happened a day apart?)
• The first build after a restart seems to avoid this issue, the builds occur OK after the quiet
  period expires. After that I need to force them...

The subversion polling check seems to keep occurring but does not cause a build when changes occur. Two
examples of the check below:

Started on 28-Sep-2008 13:56:43
svn://svnserver/myproject is at revision 21,270
(changed from 21,268)
Done. Took 0 sec
Changes found

Started on 28-Sep-2008 14:01:43
svn://svnserver/myproject is at revision 21,270
(changed from 21,268)
Done. Took 0 sec
Changes found

This maybe related to issue #2180.