oye.....
Try the easy way first:
Delete the program entries that aren't working in Program Control/ Programs. In Privacy/ Main, turn off Cookie Control, Ad Blocking and Mobile Code. Now try them.
Hard way....nuke it:
1. Boot your computer into the Safe Mode.
2. Browse to the c:\windows\internet logs folder.
3. Delete the backup.rdb and iamdb.rdb files in the folder.
4. Reboot into the normal mode.
You will lose all your custom settings.
All better now?