Since last Thursday my upload speed has dropped to a crawl of 30-100k. My download speed is unaffected.(7000)
Tier 3 have tested and said there isn't a line or exchange problem and reckon it's either the computer or router, but have never come across this problem. In the mean time I can only upload straight emails, even the smallest attachment will cause a time out after 60 seconds.

By the way I have a direct number for Tier3 if anyone wants it.