|That's because what you're copying isn't plain text. You're copying the whole styling (fonts, colors, graphics, etc.) and your computer is freezing when trying to paste it all into Word with the same styling. When it finally does paste (assuming it eventually responds again), the little Paste icon appears at bottom-right of the content with options to Keep source formatting, Match destination formatting (your Word document), or Keep text only. If you're only keeping text, I'd use the last option.|
Sure, that's good to do after it's pasted, but if your computer never comes out of the freeze period, it's useless. Instead, click the down arrow below the Paste option and choose Paste special, then choose Unformatted text.
If you're trying to copy a lot of your Facebook content, you might be happier if they just sent it to you. Once logged into Facebook, click the gear icon (Options menu) then go to General tab, then click the Download a copy of your FB data option at the bottom.
If possible, I strongly advise upgrading to 2GB of RAM for Windows XP.
Apologies if I don't respond to your reply immediately. I don't check this site daily, but you're welcome to PM me as a reminder.