Suspend via the Admin control panel - checkbox, suspend.
There's really not any other way to suspend a reseller, is there? This is how we've always done it.
What Operating system are you running?
It's happening on RH9, FC2 and Cent 3.3 - dont really think it's a platform dependent issue as it's a DA function, but maybe not an issue in Debian.
Yes, it previously worked fine... not sure when it stopped, but there were a couple other reseller issues for the last bugfix, my suspicion is that it started at that point, because last time I really looked, it was working fine.