I had posted about flash plugin controls not working in Ubuntu 9.10 Karmic Koala 64 bit here. I had moved to Ubuntu 32 bit for quite sometime and recently made a move back to Ubuntu 64 bit. I found the same problem with flash plugin controls in Ubuntu 64 bit. Sometimes it works, and sometimes it doesn’t. I haven’t found any specific patterns to when it does and when it doesn’t. If someone has, please do share.