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.

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

Thunderbird 31.7.0 running s-l-o-w!

  • 4 replies
  • 6 have this problem
  • 3 views
  • Last reply by CypressTx

more options

TBird 31.7.0 on Windows 8.1 with Kaspersky AV

Everything was great until a few days ago. TBird still downloads messages quickly, but task windows are slow to open, and tasks very slow to initiate. "Delete all marked spam" used to send 50-100 messages to trash in seconds, now it takes about 3-4 seconds per message! Opening messages is slow, everything has slowed down. Any suggestions? Thanks!

TBird 31.7.0 on Windows 8.1 with Kaspersky AV Everything was great until a few days ago. TBird still downloads messages quickly, but task windows are slow to open, and tasks very slow to initiate. "Delete all marked spam" used to send 50-100 messages to trash in seconds, now it takes about 3-4 seconds per message! Opening messages is slow, everything has slowed down. Any suggestions? Thanks!

Chosen solution

OK, I downloaded and ran HitManPro; no malware but some adware and other junk that apparently was piled on that Kaspersky missed. Deleted all, TBird seems to be working OK for now. I don't understand how it was affected, but apparently it was. I will advise again.

Read this answer in context 👍 1

All Replies (4)

more options
more options

Thanks Matt, I read about the AV conflicts and turned off Kaspersky but still have the problem.

more options

Chosen Solution

OK, I downloaded and ran HitManPro; no malware but some adware and other junk that apparently was piled on that Kaspersky missed. Deleted all, TBird seems to be working OK for now. I don't understand how it was affected, but apparently it was. I will advise again.

more options

The fix still works, additional scanning is now on a scheduled basis.