OpenSuse 12.2. Error failed to load file amd-ucode/microcode_amd.bin

Hello:

I’ve updated opensuse12.2 and installed some community programs.

Now my computer is unable to start some times (other stars, trying many times uses tor start).
The error I can see is:
| Started Show Playmouth Boot Screen
|
Firmware microcode: firmware_loading_store: unexpected value (0)
microcode: failed to load file amd-ucode/microcode-amd.bin |

My computer is AMD-64. I've downloaded firmware from AMD and copied files as said in AMD instructions. 
As I say, sometimes it starts and no others (the same happens in recovery mode).

Any suggestion?

 Thanks