I've got a mid-2009 Macbook Pro running Lion over 802.11n with an Airport Extreme and cable internet. I've been seeing drop-outs while using video chat (be it Facetime, Skype, Google Chat) and doing anything else (gaming, Hulu, Netflix, etc) on the network.
I ran ICSI's Netalyzr and found that the network buffering was 4000ms upstream and 3200ms downstream, which is abysmal. Running the same test on my Windows 7 machine (over 802.11b) results in 220ms upstream and 1800ms downstream.
Aggravatingly enough, when I switch my Macbook to 802.11b, Netalyzr fails to complete. I initially chalked this up to a bad test, however, video still drops out and a
ping somedomain.com in the background will show progressively increasing RTT's and packetloss.
No such deficiencies exist on my Win7 desktop.
I was unable to find any option under network preferences, and searches only brought up complaints about buffer-bloat without specifics. How do I "improve" the buffering behavior under Lion?