HT3606: About the Mac OS X v10.5.8 UpdateLearn about About the Mac OS X v10.5.8 Update
Currently Being ModeratedJul 6, 2013 12:48 AM (in response to Damitrius)
This thread from about a year ago answers a similar question and has the benefit of contributions from several senior people. Lot of reading, but it should solve your problem.
There were a number of problems with the 10.5.2 OS but most were resolved via the 10.5.2 Combo updater, which I would have recommended as your first option.
Message was edited by: seventy one