Well, perhaps "android" doesn't answer these calls into the wilderness because there is no "android" out there. But there is Google (you can go to the Google Forums) and there is XDA Developers (much more techie folks solving these problems).
As far as pictures disappearing, there are a several possibilities:
1. There is a virus/worm on the SD card which hides the folders and replaces the folders with a file with the same name but with a LNK extension. To resolve this, unmount the SD card, place into a virus connected PC, remove the worm, delete the LNK files and unhide the folders.
2. Adobe Flash Player may be the reason for the problem. Uninstall the flash player. You don't really need that on an Android device.
3. There are some cases of the official Twitter app being the issue. Uninstall it and use an alternative Twitter app.
Good luck. If these don't work, try a Google search.