Well, here is the actual output of fdisk:

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root@ubuntu:~# fdisk -l /dev/sda

Disk /dev/sda: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders, total 312500000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0002e287

Device Boot Start End Blocks Id System
/dev/sda1 2048 8390655 4194304 82 Linux swap / Solaris
/dev/sda2 8390656 159942655 75776000 83 Linux
/dev/sda3 159942656 312498175 76277760 83 Linux
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As a last try, I resetted the MBR, but it didn't help...