BustABuckt

I recently installed a Verizon FiOS network in my house, and everything works great with three of my four computers. The typical speeds I'm getting are 6,000 kbps to 15,000 kbps download and 1,000 kbps to 3,000kbps upload, depending on where I do the test. However, I have one computer which seems to be getting the download speed, but the upload speed on multiple speed test sites average 6kbps. This is the result from the download and upload test from the bad computer. :::.. Download Stats ..::: Download Connection is:: 8070 Kbps about 8.1 Mbps (tested with 12160 kB) Download Speed is:: 985 kB/s Tested From:: https://testmy.net/ (Server 1) Test Time:: 2007/07/03 - 8:18pm Bottom Line:: 141X faster than 56K 1MB Download in 1.04 sec Tested from a 12160 kB file and took 12.344 seconds to complete Download Diagnosis:: Looks Great : -100 % faster than the average for host (verizon.net) D-Validation Link:: https://testmy.net/stats/id-T2LIR4SF3 User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4 [!] :::.. Upload Stats ..::: Upload Connection is:: 6 Kbps about 0 Mbps (tested with 97 kB) Upload Speed is:: 1 kB/s Tested From:: https://testmy.net/ (Server 1) Test Time:: 2007/07/03 - 8:23pm Bottom Line:: 0X faster than 56K 1MB Upload in 1024 sec Tested from a 97 kB file and took 142.656 seconds to complete Upload Diagnosis:: Looks Great : -100 % faster than the average for host (verizon.net) U-Validation Link:: https://testmy.net/stats/id-7YZ09TOW3 User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4 [!] I've looked around, and I think this has something to do with packet loss, but I have no idea how to fix it. I'm pretty sure the problem has to do with network or firewall settings on the problem computer, because all of the other computers are working fine both wirelessly and plugged in. But of course, I could easily not have a clue what I'm talking about. Right now, the bad computer is only running Windows firewall (I did disable it, with no effect) and I did scan for viruses/trojans and spyware...the tests came up clean. Any ideas on how to solve this?