We had no changes on our side after Sunday morning. Windows updates had an effect on Wednesday morning, but not Tuesday evening (and it didn't wipe all P2P out ...).
Can you post a traceroute and the output of say 30 pings to rosebank.spdtst.saix.net (e.g. 'ping -n 30 rosebank.spdtst.saix.net' ?
C:\Users\Beast>ping -n 30 rosebank.spdtst.saix.net
Pinging rrba-ip-dlr-1-1.telkom-ipnet.co.za [196.25.45.102] with 32 bytes of data
:
Reply from 196.25.45.102: bytes=32 time=15ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=15ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=16ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=15ms TTL=248
Request timed out.
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=15ms TTL=248
Reply from 196.25.45.102: bytes=32 time=19ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=16ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=51ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=25ms TTL=248
Reply from 196.25.45.102: bytes=32 time=53ms TTL=248
Reply from 196.25.45.102: bytes=32 time=14ms TTL=248
Reply from 196.25.45.102: bytes=32 time=17ms TTL=248
Ping statistics for 196.25.45.102:
Packets: Sent = 30, Received = 29, Lost = 1 (3% loss),
Approximate round trip times in milli-seconds:
Minimum = 14ms, Maximum = 53ms, Average = 17ms
My results now @ 18:47... Torrents down again!