This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Slow network connection with Firefox but not IE - some more ideas?

  • 2 fhreagra
  • 3 leis an bhfadhb seo
  • 3 views
  • Freagra is déanaí ó bildoskar

bildoskar
bildoskar
more options

My network connection works well (wireless approx. 25 Mbit/s downloading, cable approx. 140 Mbit/s) with everything except Firefox on one of my computers. Firefox performance is only 1-4 Mbit/s irrespective of wireless or cable. Firefox in failsafe mode and IE9 in normal mode on the same computer have expected good performance. I have no more ideas what could be the problem with firefox settings/plugins or whatever (see troubleshooting information). Some who has?

My network connection works well (wireless approx. 25 Mbit/s downloading, cable approx. 140 Mbit/s) with everything except Firefox on one of my computers. Firefox performance is only 1-4 Mbit/s irrespective of wireless or cable. Firefox in failsafe mode and IE9 in normal mode on the same computer have expected good performance. I have no more ideas what could be the problem with firefox settings/plugins or whatever (see troubleshooting information). Some who has?

All Replies (2)

philipp
philipp
  • Moderator
more options

hello bildoskar, there are many reports that f-secure doesn't work well together with adobe's flash plugin 11.3+ (since it has introduced a protected sandbox mode) - other users have had similar symptoms. please try the following steps:

  • also make sure that enhanced process monitoring is disabled in advanced settings > computer > deepguard since it might interfere with adobe flash' and or generally disable deepguard.
  • if this does not increase the download speed to normal levels you could try downgrading to flash 10.3 since it's still maintained by adobe and see if this resolves the issue.
bildoskar
bildoskar Úinéir na ceiste
more options

Thanks a lot, the second bullet, to disable the deepguard "enhanced process monitoring" in f-secure, solved the problem! The first was already disabled in this case.