OK, I guess where to fix. Just add one line on this page: mod/quiz/addrandom.php

76 quiz_add_random_questions($quiz, $addonpage, $categoryid, 1, $includesubcategories);
77 //Longfei-OIT, 9/21/2011 Total of grades doesn't update after add random question
78 quiz_update_sumgrades($quiz);
79 //--------------------------
80 redirect($returnurl);

Then every time after you add a random question, the sumgrade will recalculate and update automatically.

Please don't put junk like the following in the Testing instructions box:

http://moodle.org/mod/forum/discuss.php?d=184405

I have an important question, we are running 2.0.3, and will not update to 2.1 until at least next Spring, but teachers want this feature so bad. Would you please let me know where to fix in the source code, so that people can use the question bank without any issue? I think it is only a very small change, only need to update the SUMGRADE field by adding 1 after you add a random question.

The main moodle.git repository has just been updated with latest weekly modifications. You may wish to rebase your PULL branches to simplify history and avoid any possible merge conflicts. This would also make integrator's life easier next week.

TIA and ciao

this has been integrated and is ready for testing

Thanks all - passing this now

fixes have been rolled merrily up the stream! Thanks everybody!