all uploads are "transfer interrupted"

[washout]

anyone who tries to download from me, cannot.
on my end, under the monitor tab, anyone who tries goes straight to "transfer interrupted."
can anyone diagnose my problem ??

i have updated the tcpip.sys from the sticky at the top of this subforum.
in lw > tools > options > uploads > slots the value for uploads per person = 100 and the value for max upload slots = 100.
my isp is comcast, southeast.
i read on one thread that some people with comcast can upload, others cannot.
i did not locate a fix if the problem is my isp.
i am runnin windows wx + sp2.