It keeps crashing when opening of facebook chat and keeps using allot of resources from my PC

Is it just facebook or your internet connection ??..
The Facebook Chat feature allows you to send and receive messages in real time with friends who are online.
Your chat box reveals a list of available friends you can chat with by clicking their names.
For those times when you're not up for chatting, you can choose from several different privacy options, including disconnecting Facebook Chat.
You can opt to disconnect it completely, or just partially allowing chat availability for certain people and not others.
You can reconnect in a few quick steps.
Facebook Chat Availability

Your Facebook Chat availability determines how you appear in your friends' chat lists.
When you're logged in to your Facebook account, your name appears in the chat sidebars of any friends who are currently logged in.
When you set your chat preference to available, a green box appears next to your name.
When you're available, but idle, a grey moon appears next to your name.
When you're unavailable, your name appears without an icon.

Adjusting Chat Availability
Adjust your chat availability to control the visibility of your name in friends' chat lists.
Sign in to your Facebook account and click the "Chat" box in the lower right corner of any page to open your chat list.
Click the "Options" icon in the upper right corner of the box.
Click "Go Offline" to disconnect your chat availability.
If you're using the Facebook Chat sidebar, click the "Options" icon in the upper right corner of the box. Click the "Chat" box to open the sidebar if it isn't showing up on your home page.
Click the "Available to Chat" option to delete the check mark, making yourself invisible and unavailable to chat. Click the "Limit Availability" option and use the resulting pop-up to choose which friend lists you wish to remain visible to. This allows you to chat with some friends without others knowing you're logged on.
Disconnected Facebook Chat
Once you disconnect Facebook Chat or limit your chat availability, your online presence will be invisible to other users.
You can still browse the Facebook site as you would normally.
The appearance of your chat list won't be altered by your availability; you'll still be able to see which of your friends are online and available to chat.
That is, as long as their chat availability isn't hidden or disconnected.

Your Chat Messages

If a friend attempts to message while your Facebook Chat is disconnected, the message will be delivered to your Facebook inbox.
You'll receive an on-site notification, as well as text or email notifications if you're set up for that, alerting you that you have a new message in your inbox.
Click the "Message" icon that appears in the upper left corner of any page upon signing in to your Facebook account.
Any new messages will appear in the drop-down list. Click the "See All Messages" link at the bottom of the box to access your inbox and respond to any messages.

http://www.facebook.com/help/?topic=chat

Check your router and make sure that port 80 is open.

First gather the internet computer related resources to gaurantee communcations functionality. For example, ascertain that the computer is functioning, internet connection has been established and finally type search www.facebook.com to arrive at the website from where logon is initiated. Second facebook chat would have required to acquire entities email addresses to be added as contacts while with the websites. Account holders have among the feature functions to add contacts usually with facebook either as emails address, phone numbers, website addresses as examples of association. Once details has been intergrated in to the personal accounts spaces, whenever the entities were on the network becomes possible to alert each other of presence requesting communication also knwn as chat. For associates that least have facebook accounts would require to be imformed bu the member on facebook either on phone mail or alternate means to establish an acount for compartibility reasons. Usually, once each entity on the facebook contact list has similar computer telecommuncation resources becomes possible to text media mesage amonsg several internetwork experiences.

There are a lot of proxy sites available to bypass your firewall restriction.

Here are few:

http://ads-blackfriday.com/
https://www.rbypass.info/
http://bypassfacebook.us/

just type www.facebook.com on the address field and hit Go.

Please tell me how this goes. Thank you for using FixYa.

simply reload the page or try exiting other pages you may be using FB chat uses alot of resources and older or slower computers often cant run it also it seems facebook is having a few issues tonight your not alone

Hello i hope u 'll be fine.... thanks for using fixya.

• Now u can chat with your Facebook friends by "Facebook chat Messenger". To download "Chitchat for Facebook messenger" Just Click Here
• Download it and install on your PC, After it, Just login it with your Facebook id and chat with your friends online through it,

Best of luck and enjoy
Kindly do rate if it is helpful,

THANKS & Keep using Fixya

Hello i hope u 'll be fine.... thanks for using fixya.

• Now u can chat with your Facebook friends by "Facebook chat Messenger". To download "Chitchat for Facebook messenger" Just Click Here
• Download it and install on your PC, After it, Just login it with your Facebook id and chat with your friends online through it,

Best of luck and enjoy
Kindly do rate if it is helpful,

THANKS & Keep using Fixya

Facebook Chat history is only stored by Facebook.com for a limited amount of time. You will be unable to access Facebook Chat history after this time.
The solution is to use a Facebook Chat Messenger that stores Facebook Chat History on your computer.

Try Using Different Browsers other then IE explorer 8 or below, they have problems working with new chat windows and stuff that it don't really recognize. For instance try firefox,opera,google chrome,safari 4

One of these would have to work with facebook, if not make sure you have enough RAM space to even run anything other then browser sometimes a slow machine can just freeze from working it self to hard.

What does the error report say?  What browser are you using?  Is it also crashing?  Try a different browser.