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Firefox download manager reacts unexpectedly.

Posted

I'm unable to properly download files using the default Firefox download manager. The relevant extensions are:

 1. Download Status
 2. Download Statusbar
 3. DownThemAll (although since this doesn't interfere with the default, I don't see what this might have to do. Included for completeness).

Now to the problem: Firefox shows weird behaviour whenever downloading a file:

 1. The download completes, and it keeps scanning the file with an antivirus for indefinite periods (it never ended so far) even with tiny text files.
 2. During this period of antivirus checking, if I download another file, the old one gets magically deleted.

I'll disable relevant add-ons, and post back the results.

Chosen solution

See "Disable virus scanning in Firefox preferences - Windows"

Try to set this pref to false on the about:config page.

  • browser.download.manager.scanWhenDone
Read this answer in context 0

Additional System Details

This happened

Every time Firefox opened

This started when...

I'm not sure. I'm sorry for the unhelpful reply

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • A plugin to detect whether the Adobe Extension Manager is installed on this machine.
  • Nokia Suite Enabler Plugin
  • Facebook Video Calling Plugin
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • Facebook Desktop Plugin
  • A plugin to detect whether the Adobe Application Manager is installed on this machine.
  • Next Generation Java Plug-in 10.7.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • 5.1.10411.0
  • Enables the interaction of Mathematica content with the latest installed version of Mathematica.
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers
  • np-mswmp

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0

More Information

Application Basics
Name
Firefox
Version
16.0.2
User Agent
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0
Profile Folder
Show Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Adblock Plus
2.1.2
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
British English Dictionary
1.19.1
true
en-GB@dictionaries.addons.mozilla.org
Download status
1.7.3
true
{9fb8c270-7124-11dd-ad8b-0800200c9a66}
Download Statusbar
0.9.10
true
{D4DD63FA-01E4-46a7-B6B1-EDAB7D6AD389}
DownloadHelper
4.9.11
true
{b9db16a4-6edc-47ec-a1f4-b86292ed211d}
DownThemAll!
2.0.15
true
{DDC359D1-844A-42a7-9AA1-88A850A938A8}
Elite Proxy Switcher
1.2.0.2
true
eliteproxyswitcher@my-proxy.com
Reddit Enhancement Suite
4.1.4
true
jid1-xUfzOsOFlzSOXg@jetpack
Session Manager
0.7.9.1
true
{1280606b-2510-4fe0-97ef-9b5a22eafe30}
Session Manager Export Tool
0.2
true
sessionmanagerexporttool@tijtij.com
Adobe Acrobat - Create PDF
1.2
false
web2pdfextension@web2pdf.adobedotcom
Awesome screenshot: Capture and Annotate
2.3.8
false
jid0-GXjLLfbCoAx0LcltEdFrEkQdQPI@jetpack
Firebug
1.10.6
false
firebug@software.joehewitt.com
Important Modified Preferences
Name
Value
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
1048576
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size_cached_value
778240
browser.cache.memory.capacity
65536
browser.display.show_image_placeholders
true
browser.places.smartBookmarksVersion
4
browser.privatebrowsing.dont_prompt_on_enter
true
browser.search.useDBForOrder
true
browser.startup.homepage
about:home
browser.startup.homepage_override.buildID
20121024073032
browser.startup.homepage_override.mstone
16.0.2
browser.tabs.warnOnClose
false
dom.indexedDB.enabled
false
extensions.lastAppVersion
16.0.2
gfx.direct3d.prefer_10_1
true
network.cookie.prefsMigrated
true
network.http.max-connections
32
network.http.max-connections-per-server
8
network.http.max-persistent-connections-per-proxy
8
network.http.max-persistent-connections-per-server
4
network.http.pipelining
true
network.http.pipelining.maxrequests
8
network.http.proxy.pipelining
true
network.http.request.max-start-delay
0
network.security.ports.banned
8118,8123,9050,9051
network.websocket.enabled
false
places.database.lastMaintenance
1352385968
places.history.expiration.transient_current_max_pages
104858
plugin.expose_full_path
true
privacy.cpd.cookies
false
privacy.cpd.downloads
false
privacy.cpd.extensions-sessionmanager
false
privacy.cpd.formdata
false
privacy.cpd.history
false
privacy.cpd.sessions
false
privacy.sanitize.migrateFx3Prefs
true
privacy.sanitize.timeSpan
0
security.warn_viewing_mixed
false
Graphics
Adapter Description
NVIDIA GeForce GTX 550 Ti
Vendor ID
0x10de
Device ID
0x1244
Adapter RAM
2047
Adapter Drivers
nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Driver Version
9.18.13.697
Driver Date
10-2-2012
Direct2D Enabled
true
DirectWrite Enabled
true (6.1.7601.17789)
ClearType Parameters
Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 200
WebGL Renderer
Google Inc. -- ANGLE (NVIDIA GeForce GTX 550 Ti) -- OpenGL ES 2.0 (ANGLE 1.0.0.1041)
GPU Accelerated Windows
1/1 Direct3D 10
AzureBackend
direct2d
JavaScript
Incremental GC
1
Accessibility
Activated
0
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.2
4.9.2
NSS
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS Util
3.13.6.0
3.13.6.0
NSS SSL
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS S/MIME
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC

Question owner

Update: I just disabled all add-ons. The problem persists. In addition:

 1. In the download statusbar, it shows scanning, but the download disappears from the download window, so download history isn't kept. I've verified the settings, there isn't anything that says that it shouldn't save download history.
 2. Completed downloads vanish off the list, so download history is useless.
 3. When the scanning appears in the statusbar, and I start another download, one of the two is kept in the download list, cannot remember which.
cor-el
  • Top 10 Contributor
  • Moderator
10740 solutions 96657 answers

Chosen Solution

See "Disable virus scanning in Firefox preferences - Windows"

Try to set this pref to false on the about:config page.

  • browser.download.manager.scanWhenDone

Question owner

Fortunately, I didn't need to disable that. All the priblems were fixed by deleting download.sqlite in the profiles folder, as described in the first link you gave me. It was essentially useless by now, and not really a loss.