As far as I know, SM1.1.1 is recommended, just as Firefox2.0.0.2, but for the time being the SM1.0.x is maintained, just like Firefox1.5.0.x is. So, we have SM1.0.8 and Firefox1.5.0.10.
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2) Gecko/20070219 Firefox/2.0.0.2
"I've got a very poor sense of direction. I keep forgetting which way is forwards."
WinXP, SP3, 512 MB, 3.0.15 regular, 3.5.5 regular and portable , TB2.0.0.23, Flock2.5.2, IE8.0, SM2.0, Google Chrome2.0.x, Zone Alarm Firewall; AVG9.0, JRE1.6_17