Message is now off. Telus has apparently repaired the pixelation problem on their end. Everything is working fine for me again.
Regarding your choice of routers. I notice you stated:
" He ( sic Installer ) did not like that i had my own router. Says it wont work as it should if i do not use a Telus installed router. "
You do have the Telus D-Link router hooked up don't you? That should be a D-Link DVA-G3810. You do have to have that hooked up for your TV and Internet to work properly.
My Installer specifically noted that the DVA-G3810 does not have a great wireless range as compared to my Linksys WRT-54G. He told me I could set up my Linksys WRT-54G as a wireless bridge, but the D-Link DVA-G3810 must be hooked up as primary router, and main computer should be connected by Ethernet to get full compatibility with the system...and to ensure proper bandwidth allocation. ( Edit: Telus also has a longer antenna for the D-Link router that improves wireless transmission. Installers usually have them in their trucks. No charge of course )
So your TV and Main computer should be fed directly off the D-Link.
As to why it worked for 4 months and not now? You may have been on the old ADSL/ADSL-2 service. Since about April, all installs have been with a VDSL Modem and matching Telus router. However, Telus has gradually been switching over ports from ADSL/ADSL-2 to VDSL. This all takes time.
If they recently did a switch over to VDSL hardware in your area and you do not have the D-LINK DVA-G3810 hooked up as a primary router, then that could be why things don't work anymore.
If you do have the D-Link hooked up as a primary router, then ask Telus to send someone out and check your system.