I've recently installed openSUSE 11.4 (64 bit) on my system and am experiencing severe performance issues with websites using https (any site using https). Page loads over https take anywhere between 30 seconds to 2 minutes. It's the same issue posted here Secure sites load slow or not at all -- there was no confirmed solution.

- My router/hardware configuration has not changed in a long time and I've run Ubuntu, Arch Linux, and Windows XP on the same machine within the last year and have not had any issues.

- I also have a laptop running Arch Linux (kernel 2.6.38) and this problem does not occur using Firefox 4 or Chrome. To add to the madness this problem occurs while running Firefox 4 inside a Windows 7 guest via virtual box, but NOT while running IE 8 inside the same guest.

- This issue occurs using Firefox 4, Chromium, Opera, Konqueror, and Arora.

- I've disabled ipv6 in Firefox via about:config.

- I've disabled ipv6 in yast and have attempted to use both the "ifup" and "networkmanager" options.

- I am not using a proxy server.

- I've attempted the fix posted in the Ubuntu forums for a similar problem [ubuntu] [SOLVED] Banking Site is very slow - Ubuntu Forums to no avail, i.e.,
# as root
echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
# append to /etc/sysctl.conf
net.ipv4.tcp_window_scaling = 0
- SSH and retrieving mail via IMAP + SSL does not appear to be affected.

- Download speeds and regular page loads are not affected.

Any ideas?