This is a problem which I face repeatedly while updating my websites or adding new eBay listings. The PS2 keyboard stops working, though the mouse continues to function properly.
The files on the website and on my hard disk also seem to be changed and have a number of grammatical mistakes.
The problem is temporarily solved by disconnecting the internet cable connection and restarting the computer. The problem of text alteration exists even with a EVDO connection.
Restarting the computer is only a short term solution. In the long term the problem can be only be fixed by finding out who is hacking my computer , taking remote access, what his motivation is, who is funding him