No. They've disbanded.
if you mean a concert with all 5 members in it, it was x-concert, that was supposed to assuring fans they won't split up and will be SS501 forever. but each member is have had solo activities. kim kyu jong and heo young saeng have held big concerts and fan meetings in 6 Asian countries recently.
Ss501
Well,I don't actually know but try following them in Twitter. That may help you and the other Triple S to know..^^
SS501 doesn't have any Japanese member.
http://www.ss501.com.jp/ the official fan site of ss501
Yes, they would be having their Persona concert tour around Asia soon. Singapore is one of the destination. They would be in Singapore in around December in 2009.
The ISBN of The Last Holiday Concert is 0689845162.
The Last Holiday Concert was created in 2004.
Knowing where SS501 lives is a tad bit creepy and stalker-ish for a fan...o_0
sd
Bon Jovi was the last concert played at wembley