Sorry if such a question has been posted before. I couldn't find it.
I don't know how, but suddenly when I double click in a folder inside of a drive folder, the drive folder in the left pane also opens and shows all subfolders.
It wasn't like that before and I tried but could not find a way to restore the original behavior.
OS Windows 7 Professional x64 Backtrack 4 R2 CPU Intel Core i5-650 Motherboard Gigabyte P55-UD3 Memory 4 GB Geil PC3 12800 Graphics Card HIS HD 4870 X2 Sound Card Sound Blaster X-Fi Titanium Fatal1ty Champion Monitor(s) Displays BenQ 22" G2220HD
Keyboard Microsoft SideWinder X6 Mouse Razer Abyssus PSU Antec High Current Gamer 620W Power Supply Case Thermaltake Armor+ MX Hard Drives Seagate Barracuda 7200.12 500GB
Seagate Barracuda 7200.12 500GB
OS Windows 7 Professional x64 Backtrack 4 R2 CPU Intel Core i5-650 Motherboard Gigabyte P55-UD3 Memory 4 GB Geil PC3 12800 Graphics Card HIS HD 4870 X2 Sound Card Sound Blaster X-Fi Titanium Fatal1ty Champion Monitor(s) Displays BenQ 22" G2220HD
Keyboard Microsoft SideWinder X6 Mouse Razer Abyssus PSU Antec High Current Gamer 620W Power Supply Case Thermaltake Armor+ MX Hard Drives Seagate Barracuda 7200.12 500GB
Seagate Barracuda 7200.12 500GB