You could set your right or left side convenience keys to open manage connections, then you're just one click away from activating/deactivating bluetooth?
Go to options -> screen/keyboard and scroll down to convenience keys.
Hope this helps.
Posted from my CrackBerry at wapforums.crackberry.com
What you mean is "one-touch-on/off toggle". Hmmm,I had that on my Symbian UIQ Sony Ericsson P1i but it was a program done by someone, not a by-default app into the phone. Didn't see it in BB - I'd love to have that.