The FAQ resource has been plastered over the forum thru my sig below for some time now (including posts in threads you started previously!). Little bits were revealed about one or the other setting in the fora, to include the Start Here forum. Beyond that, no need to expand / duplicate as all the regular user settings will be controllable directly from preferences screens included in the next recommended BOINC release, presently still in pre-Beta state. AND the first word is tell tale in the specific control file FAQ: WARNING!

Shirish,

Actually the checkpoint log setting is mentioned in that subject's post (with a link to the official cc_config.xml wiki):

http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=11332

Sekerob

Here's my minimalistic version including a line that maintains the statistics tab graphs for 90 days instead of the default 30.

<cc_config>
  <log_flags>
    <checkpoint_debug>1</checkpoint_debug>
  </log_flags>
  <options>
    <save_stats_days>90</save_stats_days>
  </options>
</cc_config>

The task debug flag should be set to '0' unless you need extra diagnostics. Just creates loads of unnecessary entries. To emphasize, the bolded line only works on client version 5.8.16 and up and was created specifically to get checkpoints only.

The credit.... (?) Are you talking about the task reporting? The agent only shows the credits up to inclusive the last time it communicated with the servers and only for work which was validated up until that point.