I have been running 64 bit Heron for 2 days and have been able to successfully able to overcome the past issues.
- Dual monitor support
- Codecs and multimedia
Dual Monitor Support
Some quick searches got me to xrandr and the appropriate settings to actually satisfy my basic needs. Since I am on the Intel chipset, no fancy desktop settings for me. The cube effects are not available.
The Broadcom and any other wireless chipsets I have tried out with Heron have been pretty good. Personal WEP and WPA have been stable. Enterprise WPA is, well, still in the need as far as I am concerned. The complexity around my work's Enterprise WPA is a pain. I can connect...and then...nothing...and then...connected. Whateve...
Codecs in Ubuntu have been pretty good...always have. The advances around such players as VLC and Totem make the distro a good player in the multimedia field. MP3s, AVIs, and Quicktime work out of the box, with quick downloads and configs of course.