Corrupted Downloads with high speed bandwidth and avast in the background

Hi all.

I’d like to report a strange behaviour that I encountered first, when my new 100Mbit connection was set-up mid-December. Here is what it is about:

Problem:

  • Downloads stop at 99% (e.g. Firefox download bar stops progressing until manual interference)
  • Downloads are corrupted as in “not installable/open-able”

What I encountered so far

  • tested several browsers (Opera, IE, Firefox, Chrom) → same behaviour
  • Program initiated downloads would sometimes also fail, e.g. program updates
  • Youtube videos will stop or go greenish
  • Problems encountered only at high speed, i.e. near the 100Mbit or above >=9MB/sec
  • No problems encountered if avast is switched off
  • I also checked cabling switch and router
  • No Problems so far moving things around within my home-net, e.g. shifting music from computer to NAS I get ca 9-10MB/Sec

The problem seems somewhat random and “slow speed downloads” always work. I definitely did not have this problem before the 100Mbit upgrade.

Could it be that Avast gets “hickups” at high speed downloads and interferes with standard internet downloads?

My setup

  • Athlon Phenom II X6 T1000
  • ASUS Crossfire Extreme MoBo
  • Vertex 3 SDD as primary hard disk
  • 3 more sata II hard drives
  • 2 Blu Ray drives
  • Windows 7/64 Bit
  • AVAST Internet Security newest version
  • Computer is hooked up TO a switch TO wall Ethernet socket TO switch TO router (Fritz Cable 6360) TO Provider Socket in cellar
  • All CAT 5/7 cables

Other than that, I use Windows 8 and SpyBot-S&D 2 is running in the background that I have not checked.

Any ideas? Ta

Kobe

Just reporting back that since new update of Avast I have not encountered any such problems for some weeks now.

Case closed ;D

Ta
Kobe

Thanks for taking the tine and giving us the feedback.