I have the exact same issue as Jhbgirl.
Any download drops to zero every few minutes, then starts up again.
This is painful, because you get logged out of servers, after a while, and struggle to get back in (no torrenting).
Especially downloads from google play is painful, and takes forever(over the wifi).
The modem does not seem to loose sync, downloads just dropout, and start again.
I have a 4mg line, and a MWEB, uncapped subs.
I have done the following:
1.Tested with Afrihost account, same issue.
2. Replaced modem. Same issue (tested both modems at work, both worked perfectly, no drops)
3. Replaced filters on lines.
4. Disconnected all extensions and instruments(and filter), have only line to modem.
5. Contacted MWEB. They sent me to Telkom.
6. Logged with Telkom. Tech came out, and tested this and that, eventually swopping some cables at the exch, and resetting ports and whatnot, telling us there is no problem on the line.
The SNR and attenuation is is great, according to all guides available.
So, where to go now?
I am thinking of ordering three or four new adsl lines, hoping that Telkom will run out of cables, and HAVE to put new wire to my house. Seems expensive and excessive route, but I am out of options.
Is there no Professional IT company that can investigate and assist, for a fee, residential ADSL issues?
I live in Centurion.