I don't recall installing this, but I've just noticed TWO entries in
Add/Remove Programs, plus a hotfix, as follows:

Program Name Registry Entry Name
------------------------------------------ ------------------------
Microsoft .NET Framework 1.1 Microsoft .NET Framework
Microsoft .NET Framework 1.1 {CB2F7EDD-9D1F-43C1...
Microsoft .NET F..k 1.1 Hotfix (KB886903) M886903

I also found what I gather from research is an extra user account,
ASPNET. I can see this as one of 5 accounts when I enter:
Run 'control userpasswords2'

User name Group
----------- ------------------
Administrator Administrators
ASPNET Users
Basic Administrators; Users
Guest Guests
Terry Administrators

If I use Control Panel > User Accounts, I see only 3:

Basic Administrators; Users
Guest Guests
Terry Administrators

Q1: What is likely to have installed this Microsoft .NET Framework?
(Can I find out for sure?)
Q2: Why is it duplicated?
Q3: Is it safe to uninstall?
Q4: Will uninstalling remove the ASPNETR user account?
Q5: How would I remove that separately if necessary?

Much appreciate any practical advice please.

--
Terry, West Sussex, UK