Okay, whilst essex is checking the log...:
A restricted account means that you do not have the same rights in performing operations on the PC. Malware attackers normally, most of the time,will have the same rights as the account that is used when the malware reaches the PC. So, when you catch a malware and are logged on to Windows with Administrator rights, the malware can do just about anything. Because it gets the same rights.
As example, restricted users are not allowed to install software. Consequently the malware possibly attacking can't neither - at least in most of the cases.
So you should have one account with administrative rights (just like the Judith & Yuda account) to install software.
And you should have a second one, a restricted one, to surf the web, use MS office, listen to music etc. You can work just normally, save documents etc...
PDF files are dangerous because the program used to read and handle them (Adobe Reader) is a rather poor program securitywise (or was a poor program, it is getting much better now). So malicious code can be placed easily in the pdfs and when you open them, the Reader will perform bad things, if he has the rights to - a good reason to be on a restricted account.
