I've Lenovo S205 with the same wireless chipset and experiencing the same problem.
A few days ago I upgraded to the current dev version of quantal, running kernel 3.5.0-16-generic.
The low speed problem seems to be gone.
I tried it over a longer time and across suspend an resume cycles in a 802.11g network.
Using scp, I copied a larger file reaching about 2.6MB/s contiuously, several times.
Looks fine now!
I've Lenovo S205 with the same wireless chipset and experiencing the same problem.
A few days ago I upgraded to the current dev version of quantal, running kernel 3.5.0-16-generic.
The low speed problem seems to be gone.
I tried it over a longer time and across suspend an resume cycles in a 802.11g network.
Using scp, I copied a larger file reaching about 2.6MB/s contiuously, several times.
Looks fine now!