Sounds like Matthews will be out 2 weeks with the hamstring injury and Bigby will have surgery on Friday. And I heard Bell's injury didn't look good but I haven't read anything official on it.
The current injury list looks something like
RB James Starks (hamstring)
TE Andrew Quarless (hamstring)
WR Donald Driver (calf)
DE Ronald Talley (knee)
LB Clay Matthews (hamstring)
LB Alex Joseph (quad)
LB Brady Poppinga (concussion)
LB Frank Zombo (ankle)
SS Atari Bigby (ankle)
CB Al Harris (knee)
CB Josh Bell (foot)