hey - another user on the forum has reported, that the problem only occured when the network.http.keep-alive preference in about:config was set to false.

could you have a look if this is also the case on your system? if so please try toggling network.http.keep-alive to "true" (the default value) & network.http.spdy.enabled also back to "true" and see if the sites are still loading normally. because if SPDY is enabled & actually works right this would bring you a performance benefit when loading pages that support the protocol...

if network.http.keep-alive was already set to true, could you look at the other preferences that start with network.http. & see if any of those is not on its default value (=shown in bold) & report it here. this would help further troubleshooting the issue.

This really helped, thank you for your time.

Confirm. Keep-alive and spdy.enabled both "true" works. I had keep-alive set to false. That seems to have been the culprit. Many thanks!

That works!! I also had keep-alive set to false from being problematic on certain setups but SPDY enabled and keep-alive enabled now works fine on gmail/google stuff, thanks for solving!! :)

ok, thanks for checking back & confirming the cause of the issue. this bug will apparently be fixed by other changes in the networking core of firefox 14 anyway. so for other users affected, who don't want to change the network.http.keep-alive pref to true (for whatever reason), using the beta version of firefox 14 might be an alternative.

I can't access any accounts of Google or YouTube

Here is a screen shot of what I get when I try, http://i1065.photobucket.com/albums/u399/ehecatl2/random%20images/code.jpg

I had this problem months ago and fixed it one time by clearing cookies but that does not work anymore.

Of course it is impossible to go on any Google forums to find out about this.

If it is this SPDY thing, would somebody describe exactly how to disable SPDY. I looked around a little and don't have a clue.

I really hope someone can help with this. My OS is XP.

Ok, I found the SPDY settings. I have 3 of them; enabled, enabled.v1, and enabled.v2. I tried toggling them and nothing seemed to work. Do I need to reboot?

Wow Dude, I kept screwing around with things turning things on and off at random to see what would happen, and got this combination to work, by turning off the following switches -

network.http.spdy.coalesce-hostnames  ;false

network.http.spdy.enabled  ;false

network.http.spdy.enabled.v2  ;false

network.http.spdy.use-alternate-protocol  ;false

Oh, and I got to that by putting this in the address bar - About:config

You techies seem to know this but other people visiting this thread may not.