I would like to report that it seams the similar things are happening again tonight, looking at it and my smokeping graphs from your network to the uk it looks like you have a capacity issue.
Last night graph clearly shows that I was seeing around 11% packet loss at one point (
http://vm1.drefsab.co.uk/cgi-bin/smo...t=Net.Echo_Zen)
Tonight is showing over 13% loss, (
http://vm1.drefsab.co.uk/cgi-bin/smo...t=Net.Echo_Zen).
Traces to the server don't show any major issue until its in your network.
Tracing route to vm1.drefsab.co.uk [178.32.29.145]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 6 ms 7 ms 7 ms 10.34.248.1
3 9 ms 8 ms 10 ms manc-core-2a-ae3-2527.network.virginmedia.net [8
2.8.208.61]
4 9 ms 7 ms 6 ms manc-bb-1a-ae12-0.network.virginmedia.net [82.15
.206.245]
5 15 ms 19 ms 14 ms glfd-bb-1b-ae1-0.network.virginmedia.net [213.10
5.175.146]
6 83 ms 17 ms 14 ms glfd-tmr-1-ae5-0.network.virginmedia.net [213.10
5.159.46]
7 14 ms 16 ms 15 ms tcl5-ic-1-as0-0.network.virginmedia.net [62.253.
185.78]
8 22 ms * 15 ms sw1.tc.lon.ovh.net [195.66.224.220]
9 26 ms 23 ms 21 ms rbx-g2-a9.fr.eu [91.121.131.181]
10 146 ms 240 ms 249 ms vss-4-6k.routers.ovh.net [91.121.131.166]
11 31 ms 27 ms 22 ms 178.32.29.145
Trace complete.
This image take at 22:15 on the 7/02/12 shows all the london links on OVH's network maxed
http://vm1.drefsab.co.uk/070212.png. Every time this happens the network weather map shows the same thing.
As we speak im trying to FTP a backup of just over 4gb in size to my local pc, im on a home broadband 100mbit connection and my server which should be on the same and more 1gig nic with 100mbit on the switch etc and get I cant transfer more than about 800KB/s. My traffic graphs show this is all my servers doing.
My home connection is testing fine on other sites, but to rule things out I tried from work on a 10Gbit link and get the same results (it helps working at an ISP).
I used to see the odd bit of packet loss in the evenings but it was never more than a couple of percent and it didnt really impact on the service level at all. But now in the last 3 nights every evening services basically are becoming unusable until your network capacity load comes down.