system
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Vlk & Seand,
Vlk, I agree with Seand - and thanks for the clarifications. It’s always good to clear away any misconceptions (of which, I have many!) :-\
In reading the recent posts, I am now back at the ‘drawing’ board (in my mind, that is) of what to do about the buffer problem that is potentially hiding somewhere ready to pounce on my poor email program :o
Alas, it appears my ‘ritual’ (tinkering with my settings) was more placebo than cure! :-
While I am enjoying the absence of the ‘Program’s Internal State Corrupted’ windows for the time being - I will definitely keep checking in to keep abreast of this matter.
My thanks to everyone 
LeLe
PS: Regardless of the recent problems, I think Avast is the best and each response has been a wealth of information to me! 