To be more specific, When updating the server It deletes many entries and fails at a few of them. Here is an output server log.

[2011-01-12 13:52:12,962][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:12,972][midwestdev] ERROR:addons.base.ir.model.data:Could not delete id: 3 of model res.groups
There should be some relation that points to this resource
You should manually fix this and restart with --update=module
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/base/ir/ir_model.py", line 745, in _process_end
    self.pool.get(model).unlink(cr, uid, [res_id])
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/base/res/res_user.py", line 582, in unlink
    ', '.join(user_names))
except_osv: ('warning', 'Warning !')
[2011-01-12 13:52:12,973][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:12,986][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,012][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,032][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,044][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,059][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,071][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,087][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,103][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,120][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,133][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,146][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,157][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,168][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,189][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,199][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,214][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,225][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,238][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,251][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,267][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,280][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,291][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,308][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,318][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,334][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,347][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window.view
[2011-01-12 13:52:13,361][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,374][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,393][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,407][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,424][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,435][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,460][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,472][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,484][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,498][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,517][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,532][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,546][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,556][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,575][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,587][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,619][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,632][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,656][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,682][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,698][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,724][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,744][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,757][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,778][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,790][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,812][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>act_window
[2011-01-12 13:52:13,824][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,846][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,868][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,881][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,900][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,912][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,927][midwestdev] ERROR:addons.base.ir.model.data:Could not delete id: 6 of model res.groups
There should be some relation that points to this resource
You should manually fix this and restart with --update=module
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/base/ir/ir_model.py", line 745, in _process_end
    self.pool.get(model).unlink(cr, uid, [res_id])
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/base/res/res_user.py", line 582, in unlink
    ', '.join(user_names))
except_osv: ('warning', 'Warning !')
[2011-01-12 13:52:13,928][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>
[2011-01-12 13:52:13,943][midwestdev] INFO:addons.base.ir.model.data:Deleting <email address hidden>


I do not understand what the purpose of putting this action in your server revision is for other to break installations. Your RC2 code your have at openerp.com if it hasnt been updated should also be affected. Many people can now not upgrade their server trunk because it messes the views up. I have confirmed this bug with a few other people. Putting it roughly, it makes your software not "upgrade compatible"