Service has been great for a week - ping loss afte...

Question

Hi, 
I've recently switched from virgin media and I must say the service has been amazing so far. The ping times are far more reliable and there is absolutely no jitter on the line what so ever.
A few days ago the internet disconnected for an hour or 2 at around 1am. It wouldn't come back on after rebooting the router (the one that connects to the phone socket) a couple of times so I just called it a night and it was working again in the morning. I'm not sure if this has anything to do with the problems I've been having but lately I've been noticing packet loss on the line in the evenings / early hours of the morning, as evidenced by this TBB graph:
http://www.thinkbroadband.com/ping/share/0f41cf302992a582e75f9e9f9b410a75-13-04-2013.html
The spikes are very intermittent and last only for a second or 2 before returning to normal but it's wreaking havoc with trying to game on it. A normal ping-test shows a good connection:
http://www.pingtest.net/result/79789653.png
There's also times where the average ping will spike up to 100-200ms for a couple of minutes and then return to normal.
Please help! I've been very happy with my connection so far. I am not using the router supplied from BT but instead am using an Asus N66U which is quite new. The router is known to work perfectly and I've been rebooting both boxes to try and resolve connection issues.
Edit: Just gave everything another power cycle. The connection went from this: 
http://www.thinkbroadband.com/ping/share/0f41cf302992a582e75f9e9f9b410a75-13-04-2013.html
To this: 
http://www.thinkbroadband.com/ping/share/576c8e4182cc4fe33e35a7bef969207c-13-04-2013.html
The only difference I can see is ping times are a little higher, but the connection for the hour or so it's been on looks absolutely solid instantly after a restart. What could be causing this issue?

Answer 1

Hi David,
Thanks for the reply. I couldn't find a reply e-mail address or anywhere to login to reply, so I sent the email to forum.moderation.team email. Just incase that's the wrong thing to do, I'll post what I said below:
The speeds I'm getting are fine - many sites are reporting 38mbit down and ~8mbit up which is what I expect from the connection.
For the past few days the connection has been good, as you can see by the TBB graph here:
http://www.thinkbroadband.com/ping/share/efadfec0b36f986da8f5aaf592db0b43-21-04-2013.html
There were tiny blips of packet loss at 2pm and 6pm but nothing major. 
The problem is that there appears to be random blips of latency throughout the day, even at early hours of the morning as you can see here:
http://www.thinkbroadband.com/ping/share/4a10c0e969e6a5f3f72644516cb7526b-16-04-2013.html
On this graph the spikes started just before 12am. 
The spikes themselves aren't major and only last for a few seconds, but it's very annoying if I or anyone in the house is using the connection for gaming at the time. 
The has been a couple of nights (namely about a week after installation) that the connection has been absolutely horrendous - see the graph in the original enquiry (http://www.thinkbroadband.com/ping/share/0a49bc6365c0c2cac05c3137b03e118d-14-04-2013.html) that when I reset the modem going into the telephone box the connection will return to perfect again instantly. 
There's nothing more I can tell you really, except that the connection is generally perfect apart from these little blips of packet loss.
Thanks,
Stephen
edit:
Here's a graph from yesterday, you can still see tiny blips of packet loss:
http://www.thinkbroadband.com/ping/share/7795608ce27a576e2a182049bbcf5ff8-20-04-2013.html