Two 135 IP profiles in three days for three days...anyone else having this?

[#1]

Title says it all....the line dropped to 160 on late Friday for no reason, early on Monday morning the IP profile goes back to normal, then literally hours later it's back down at 160 again...
       
What the hell....is anyone else having this?
   
For nearing six days I've been had at 135 line profile, with a normal speed for about half a day in the mean time, when for rest of the time it's been normal sync, but the IP profile hasn't budged from 135 until the full three days after. I thought BT was supposed to have improved the IP profile setting, so when it sees a big jump, it adapts...

What gives.

[#2]

whats your normal sync rate?
are you sure you've not bein having sync blips why waiting for the profile to raise
yes your right when a big increase is sein by the DLM it should cut the ip profile waiting time down to about 24hours instead of 3days
posting your line stats are allways a good idea when having speed problems
http://www.kitz.co.uk/adsl/frogstats.php
Sync Speed 
Attenuation 
SNR Margin