Speed Help please.

[#1]

Hi guys, reset my router the other day and i have been having problems since with speed ect.  first off i had it set to ppoe and couldnt access sites other than google, changed to ppoa and its fine, but my speed has been suffering since. 
22-01-2008 21:11:30 1702.6
22-01-2008 20:40:49 968.8
21-01-2008 22:00:58 2383.4
12-01-2008 00:47:37 4835
07-01-2008 08:01:18 4956.8
07-01-2008 07:58:09 5245.7
Do i need to have it on Routed VC-MUX or Bridged? And does my VCi need to be on 38?
I have my line conencted directly into the master socket, i will try a recycle again now after posting this but i cannot think of anything else.  Other than i9 am very close to monthly cap.
Many Thanks

[#2]

http://www.plus.net/support/broadband/help_and_setup/connections_settings.shtml

[#3]

Well i have the correct settings.  Must be somehting else then.
Worse after restart
22-01-2008 21:35:13 1005.4

[#4]

Hi there,
What sort of results do you get from http://mybroadbandspeed.co.uk ?
I've had a look at your profiling and there's no apparent reason why your speeds would be poor.

[#5]

Thanks for looking, must seems to be running fine now.
Today 13:44 5027 kbps (628kB/s) 317 kbps (39.6kB/s)
Must just be a peak time issue. 
Thanks again.
Chris