Just recently, the right-click context menus in Windows 7 have been acting in a kind of left-handed way. That is, when possible, the initial menu appears to the left of the mouse pointer. When I hover over a submenu option, the next level of context menu appears to the left of the first and so-on.
Basically, what normally happens when you're right at the right-hand edge of the screen is happening all the time - except when I'm at the left-hand edge. Perhaps it's some kind of left-handed users option, but that doesn't seem likely - more like a right-to-left language option, except that I've never even tried to use a right-to-left language.
I haven't checked every app. for the issue -
probably only Windows Explorer, definitely not in Firefox, for the moment that's as far as I've checked.
Scratch that - this affects menu bars as well as context menus. The menus dangle down to the left of the menu-bar item instead of the right, and submenus open to the left too. This seems to apply to most applications, but not too Firefox or Thunderbird.
I find this extremely annoying.
I have no idea how this occurred, though it isn't the only weird glitch I've had in Windows 7 in the last few days - see Can anyone explain this weird sound-card glitch? (already fixed, but not explained)
I assume there's a setting somewhere that has got changed, but I can't find anything. There's also a chance that I've suffered some kind of registry corruption, so I might need to apply a fix in the registry - not something that scares me, but I need to know what to fix and how.
So - does anyone know what setting has been changed, and how I can fix it?
Also, beyond CCleaner (which I already have), are there any tips on making sure that the registry stays clean and sane?
Finally, both Microsoft Security Essentials and Malwarebytes Antimalware seem happy that I don't have a malware problem. Should my recent glitches make me doubt that?