[markius]

Thanks guys

I've used

Code:

disk=NFS=10.150.213.2:/volume1/openelec,rsize=32768,wsize=32768,hard,async

Which gives me

Code:

10.150.213.2:/volume1/openelec on /storage type nfs (rw,noatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=tcp,port=2049,timeo=3,retrans=2,sec=sys,local_lock=all,addr=10.150.213.2)

Which seems to have solved the problem. EDIT: I went with TCP for reliability.
It might be worth updating this post to save others from having similar problems:
http://forum.xbmc.org/showthread.php?tid=149607

M