I understand the G46 is a G45 [ which also had issues ] with bigger heatsinks . So yes its still not a wise choice even if it is less likely to have problems
There is an FX 6300 + Asrock Extreme3 bundle for $129. I trust that more than the MSI combo
EDIT : just found these
http://www.tomshardware.com/forum/330572-30-970a-warning
http://www.youtube.com/watch?v=Btgo7E5m1_c
I use an Asrock 970 EXTREME4 , which is identical to an EXTREME3 except that its wired up for possible SLI and crossfire . It runs a little hotter than a board with more power phases but I have run my FX 6300 at 4.8 Ghz with no problems . Apart from noise .
Now its dialed back to 4.3 Ghz and quiet with the Scythe Ninja cooler