I've been running at 17 Meg on ADSL2+ for ages on a default target NM of 3 dB.
2 days ago BB went down completely for half hour. When it came back it was running at 19 Meg on a target NM of 1.5 dB. Since then it has run faultlessly w/out any errors or discons.
So has BTw reduced the default target NM?
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC