my nasty Raspberry Pi problem:
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every now and then after shutting it down neatly with a halt or reboot command it loads up with a corrupted filesystem (system partition). As far as I know during operation the file system is not getting corrupted and the Pi runs stable. I've never overclocked it.

I'm using Raspbian wheezy and my only main change to it is that I created a 2nd ext4 partition for mp3's and videos and I added it to the mountpoints in /etc/fstab. When the system partition gets corrupted often both ext4 partitions their filesystems are corrupted. (files being crosslinked etc.)

Details about my setup:

-Raspberry Pi 1st version

-Ultron UHN-710 powered hub (on verified pheripherals list)

-only the hub connects to one of the raspi usb ports and in the hub is the mouse, keyboard and wifi-dongle

-I'm using raspbian wheezy from September 18 and used rpi-update

-SDHC card : Extremememory 32GB class 10 with id= man:0x000003 oem:0x5344 name:SMI hwrev:0x1 fwrev:0x0 which is exactly the one from the verified pheripherals list

-1.2A (1200ma) power supply selected especially for the Pi by RS components

pictures of the PSU: