Enabled both filters, so back to default settings regarding the filters and the speeds seem to be ok again, so not sure why MTU is an issue in this firmware?

I usually get a consistent 6Mb download speed, however since upgrading to 3.3.4.1 I have noticed my connection restricted to approx 1Mb as others have described on this topic.

I notice if I power the router off for a while, my downloads return to 6Mb for a day or two, then get restricted again to 1Mb and never return without having to restart the router again.

I don't know whether my MTU has got changed, but is currently set to 1442.

My Call Filter is Enabled and set to Set#1
My Data Filter is Enabled and set to Set#2

My sync rate is unchanged from 7648000 with SNR of 7, but I have noticed a greater number of TX and RX CRC errors than I have seen in the past.

Upgraded to 3.3.5 RC5 and reset to defaults, manually programmed settings and all is good again. I notice only 1 RX CRC error and modem code is now 211011 rather than 232201.

I see there is a new 3.3.5 on draytek.pl, dated 16/11/10, for annex A&B use.... NO RC suffix; wonder if this is the 'real thing' ??

acseuser wrote: I see there is a new 3.3.5 on draytek.pl, dated 16/11/10, for annex A&B use.... NO RC suffix; wonder if this is the 'real thing' ??

http://www.forum.draytek.co.uk/viewtopic.php?t=15091&highlight=

There seems to be LOTs of different modem codes. I took the modem code from 3.4.4.1 to pick the correct UK version of 3.3.5

Vigor2820+V3.3.5+AnnexA+232201.zip