Hello,
this problem exists for me now for some weeks.
With the PC start and Win7 loading everything becomes extremely slow: Desktop Icons white, mouse cursor barely moving, Start Menü not responding and so on. The LED of the harddsik is brightly lit then.
In general after some time - 2-3 minutes - the LED stops or is only occasionaly blinking and the whole system is quick as usually.
When I start the Task Manager during the "slow time" and go to Resource Monitor (this takes some time then) I can see that Hard Disc activity is at maximum with the Avastprocess URL.db at the top with read/write activity of 6-12 MB/s !
The next large process, prefetch or other has only 200-500 kB/s and only for a couple of seconds only.
The URL.db file is in C:\ProgramData\AVAST Software\Avast is only 112 kB or so.
How can I prevent the URL.db process?
My Avast version is 17.4.2294 (build17.4.3482.0).
Forgot to mention that Firefox has a similar "slow" problem.
From time to time, not necessary at the start the browser is slow: mouse clicks don't react, scrolling lags heavily, typing text anywhere lags and letters appear slow, tabs don't open quickly and cannot be closed quickly too.
Observing this with the Task Manager/Resource Monitor shows the same URL.db at work.