I\'m presently running BOINC Version 6.6.36. In the past with previous versions, I had been able to interrogate a text file in the manager to determine past events, such as progam cessations, trickle-ups and so on. I\'m afraid I don\'t now seem able to find where that information is stored. Any suggestions?

If by previous versions you mean pre V6, then you need to be aware that BOINC is now installed in two locations:
1) The BOINC programs
2) All of the parts that get written and re-written.

The latter is now not in the area that Windows considers should NOT be written to, for security reasons.
The file that you\'re looking for is in part 2).

This FAQ lists the common default locations for version 6: The Big BOINC 6 Answer Thread

Much obliged-thank you.