From what I can see on several comments, the BIOS for this machine is known to cause issues with suspend/resume, although I've not seen any specific solution.
Your BIOS is version 1.02 (01/09/2009) however I spotted that BIOS version 1.27 arrived on 19/11/2009, so it may be worth reflashing with that and seeing if this fixes things. Beware that reflashing the BIOS has risk associated with it and will render a machine unusable if the wrong BIOS image is used and if the reflashing fails.
@kramerstefan,
From what I can see on several comments, the BIOS for this machine is known to cause issues with suspend/resume, although I've not seen any specific solution.
Your BIOS is version 1.02 (01/09/2009) however I spotted that BIOS version 1.27 arrived on 19/11/2009, so it may be worth reflashing with that and seeing if this fixes things. Beware that reflashing the BIOS has risk associated with it and will render a machine unusable if the wrong BIOS image is used and if the reflashing fails.