Please update your Ralink network driver (netr28ux.sys) which is a bit old:
0xfffff80254a68fd8 : 0xfffff88001ce3603 : tcpip!IppDeliverListToProtocol+0x93
0xfffff80254a69070 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69088 : 0xfffff88001ce38f8 : tcpip!IppProcessDeliverList+0x68
0xfffff80254a690a8 : 0xfffff88001a82a25 : ndis!NdisMIndicateReceiveNetBufferLists+0xc5
0xfffff80254a69120 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69138 : 0xfffff88001ce78db : tcpip!IppReceiveHeaderBatch+0x21b
0xfffff80254a69140 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69208 : 0xfffff88001ce623f : tcpip!Ipv4pValidateNetBuffer+0x19f
Unable to load image \SystemRoot\system32\DRIVERS\netr28ux.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for netr28ux.sys
0xfffff80254a69238 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69258 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69268 : 0xfffff88001ce53da : tcpip!IpFlcReceivePackets+0x64a
0xfffff80254a69288 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69328 : 0xfffff88001df5b90 : tcpip!Ipv4Global
0xfffff80254a69440 : 0xfffffa800e867130 : 0xfffff88001e01f80 : tcpip!gWfpGlobalTriageBlock
0xfffff80254a69460 : 0xfffff88001ce4ca0 : tcpip!FlpReturnNetBufferListChain
0xfffff80254a69480 : 0xfffffa800e867130 : 0xfffff88001e01f80 : tcpip!gWfpGlobalTriageBlock
Image path: \SystemRoot\system32\DRIVERS\netr28ux.sys
Image name: netr28ux.sys
Timestamp: Thu Apr 12 17:50:17 2012