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Check your SSL settings
At the top of the Firefox window, click on the Firefox button (Tools menu in Windows XP) and then click Options
Select the Advanced panel.
Click the Encryption tab.
Verify that Use SSL 3.0 and Use TLS 1.0 are check marked.
If both boxes are check marked, this section does not apply. You can skip to the next section.
If both Use SSL 3.0 and Use TLS 1.0 are not check marked, check mark both of them.
Click OK to close the Options window
Check your prxoy settings
Some computers are configured to access the Internet through a prxoy.
At the top of the Firefox window, click on the Firefox button (Tools menu in Windows XP) and then click Options
Select the Advanced panel.
Click the Network tab.
Click Settings....
If Manual prxoy configuration is selected, you are using a manually configured prxoy server. Verify that all protocols listed in the dialog box are pointing to the address of your prxoy server. Contact your network administrator if you don't know this address.
If Manual prxoy configuration is not selected, this section does not apply. You can skip to the next section.
Make any changes, and click OK to close the Connection Settings window.
Click OK to close the Options window
Try to access a secure site again. If it still doesn't work, continue in the next section.
firewall رو هم یه چک کن ببخشید مثه اینکه حال نداشتم واست ترجمه کنم
http://support.mozilla.org/en-US/kb/Fire...20disabled
لینک سایت باز نمیشه به خاطر %20 که به جای فاصله خالیا گذاشته این دیگه تقصیر من نبید
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