Every single time something on my computer is downloaded (even if it’s an update for ANY program), the Avast UI pops up, and blocks any other windows I have. This is especially annoying when I have a lot of documents to download, and I have to close/minimize the Avast UI window every single time! I’ve tried putting it on “Silent Mode”, and I have gone through all of the settings, and can’t find any setting related to this issue.
Please help!
Thanks in advance 
What popup do you get ? Could you post a screenshot
Here’s the screen capture.
All that shows is you need to update your avast to the current version 8.0.1483, why haven’t you done so already ???
Still happens… Program and definitions are updated…
What system are you running and what security software do you have installed along with avast, some details are necessary for troubleshooting.
Does this still happen if you disable silent mode?
I’ve got a Gateway laptop with Windows 7. Pretty standard machine. Besides Avast, I only have Windows firewall running. I disabled the A/V.
I put it on silent mode to try and stop the pop-ups. It didn’t always happen. Only started a few months ago (maybe December?), and I’ve only had the computer since late October. I haven’t been able to find anything that I’ve installed that corresponds with when this stupid pop-up thing started 
What AV have you disabled ? you cant have another AV installed on the same system as avast, even if you think you have disabled it there will still be low level driver active which can cause conflict.
Lets reinstall Avast
Download Uninstall Utility to your Desktop.
Download the correct version of Avast
http://files.avast.com/iavs5x/avast_free_antivirus_setup.exe
http://files.avast.com/iavs5x/avast_pro_antivirus_setup.exe
http://files.avast.com/iavs5x/avast_internet_security_setup.exe
http://files.avast.com/iavs5x/avast_premier_antivirus_setup.exe
Disconnect from the net
Uninstall Avast via control panel
[]Run aswClear
[]It will offer to reboot to safe mode … Accept that
https://dl.dropbox.com/u/73555776/aswclear.JPG
[*]Once it has rebooted to safe mode
[*]In the Select Product to Uninstall dropdown choose the version of Avast that is on your system.
[*]Press Uninstall
[*]Once complete reboot your system to Normal Mode
[*]Reinstall Avast