> Is there a reason to run a 64-bit browser? (Other than the fact that amd64 provides more GPRs?) Increased effectiveness of ASLR (Address space layout randomi

> Is there a reason to run a 64-bit browser? (Other than the fact that amd64 provides more GPRs?) Increased effectiveness of ASLR (Address space layout randomization) and PIE (position independent executables) is one such reason. Using ASLR and 64 bit pointers can make some common classes of attack much more difficult, and potentially infeasible. I don't think mainstream linux distributions take full advantage of them yet, though.