If you are a Facebook + Firefox user, you might have come across this persistent problem whenever you use Facebook chat.
When I am typing to someone in Facebook chat and they send me a message, it cuts off what I am typing then it resumes typing with some letters missing.
Also when I am viewing another page, off Facebook and someone messages me in Facebook chat it pops me back to the Facebook page with the chat window open.
Basically, your Firefox session will be hijacked by the Facebook chat till you read the latest chat message. I found it really annoying, so just avoided it by going offline from Facebook chat. I initially thought I am the only one facing the issue but was surprised to see few others having the same issue! So today, I wanted to find out the reason and a possible solution for this, so that I need not hide myself from Facebook chat. This is when I bumped onto this page on Facebook issues and found the possible solution.
The problem was with QuickTime plugin for Firefox. I disabled the plugin and the issue was resolved!
I am yet to know the exact reason behind this, but it solved the issue, and that’s what matters!

I have been looking for a fix for this for a while. Thanks!
This seems to have fixed my FB chat problem, too. Thanks; it was driving me crazy.
great, big thank u…
Ok whenever i click on someones name in my chat list it automatically goes to saying that they’re offline. even though i know that they are on. would this solution work for my issue?
I am facing the FireFox/FB Chat problem, but I do not have the QuickTime plugin installed. What other plugins do you know of that may cause this problem?
Thank you soo much for this! I had a lower version, but the description said the same thing, so I disabled that one and it worked like a charm! Thanks again!
Thanks for the tip,
I’ll try this when I get home. I’m just hoping it doesn’t affect anything else though…
woowwwwwwwww what a great relieve for me…thanks a million for the tip..i had been having this facebook chat problem all these days…now things r fine….thnx again again n again……..long live..:D
Whoooo, I can’t thank you just more than enough! You are lifesaver!
UPDATE: It worked temporarily until 15 minutes later, it got slow down again, so I don’t recommend to disable it, because it is useless.
Not sure why, did you install anything new within the 15 mins period when it worked. It works great all the time for me and many others
Hi,
I am having the same problem as S@m – posted Jan 14th 2010..
I can open facebook chat but as soon as I choose someone online to talk too and start typing it says that they are offline. I have even checked with a friend over the phone (and online at the same time) but he couldn’t even see me online even though I was showing as online.
I have tried Google Chrome, Firfox and IE with no luck. I have tried changing language settings but that hasn’t helped either.. My chat hasn’t worked for months, please help!!!!
thanks alot. fixed all my problems (including my credit card debt, and low white blood cell count).