partitiion not showing up in ubuntu after wubi installation

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http://askubuntu.com – So installed ubuntu 12.04 with wubi on my Windows 7 system. Everything worked just fine after some tries, the first tries at installing failed becouse I had a ubuntu iso file in my download folder with is where wubi was. When I now boot into ubuntu I can see 2 of my 4 partition, The first is my C: drive, that is where I installed wubi so I didn't really got suprised becouse that one wasn't there. But the other partition that didn't show up was my dokuments partition. I didn't do anything speccial with it, but it don't show up in ubuntu. But the wubidir file is in there, as it is in all the (HowTos)