Slider and dropping settings

Three problems

1 images in the slider don’t resize. Should they or do I need to install Tinthumb? The slider has also now completely disappeared.

Dropping settings

2 the theme often and randomly drops the menu bar settings. The result is that instead of appearing as submenu items all the pages appear as main menu items, a very untidy three lines. Resetting is easy though as the backend structure is intact. All I have to do is save and everything reverts back to where it was.

Similarly whenever I go into the homepage settings and come out it drops the text in the “Your Network intro header text” box.

3 Is there any way to remove the Your Network sub intro post text area. When it doesn’t have any text in it looks messy and redundant.