|Okay, this is now a repeat problem. All functionality of copy/cut - paste is essentially gone. It will occasionally hit-and-miss with a proper copy-paste, but not normally.|
I'm trying this through both the standard right-click mouse command and they keyboard commands as well, to the same effect. Drag-and-drop capability remains functional and unaffected.
The last time I had this problem (a few weeks ago), I was on another forum that had no suggestions on how to fix it, so I just did a brute-force System Restore. That fixed it. Now? It's back again. I'm using Windows Vista and Firefox 8.0 (but the problem works with any type of copy issue on any program).
Both this time and the last time, all spyware, malware and antivirus programs gave my system a clean bill of health. I wish that I could correlate it to something happening, but I can't. Additionally, my hardware seems to be in complete working order as evidence by the fact that the System Restore solved the problem. I just need to know what's happening with some kind of software glitch.
I used AVG Anti-Virus, MalwareBytes AntiMalware, Kaspersky Rootkit kiler, IOBit Malware fighter (pro), and all says that everything is good.
The best thing that I can say is that it happens while I'm using Firefox. I don't know what I'm doing... but it happens then, because it's not until I'm done and go to do something that I discover the malfunction.