Strange behaviour from Start > Documents (Vista Enterprise)

I am running Vista Enterprise, with Classic Start Menu applied through a

policy. Both "Store and display a list of recently opened files" and "Store

and display a list of recently opened programs" are clicked ON.

If I delete C:\Users\userid\AppData\Roaming\Microsoft\Office\Recent clear a

corresponding network home drive (mapped to F:\) area called Recent Items

AND I clear down the corresponding Roaming Profile data area on the

HomeProfiles area of the home profiles server - I can then get rid of all the

documents and programs which appear at Start > Documents.

I have 2 questions:

1. After I have cleared this down, to 'clean the slate' as it were, I only

intermittently get the programs I have launched show up in this list - and

not consistently every time.

2. Start>Documents has a line in the box, above which sit 2 folders. What

is it that controls how these folders get referenced here?

Many thanks for any help offered...