@Joe Ah right, I never used to have any issues with "Sticky" Control; Been playing since Beta 1.8! And it seems Perfect in 1.5.2 if I install that under a profile in the launcher, Non working in 1.6.1 and Working yet occasionally going mental in 1.6.2 Snapshot; Have tried rebooting the system and the bug remains, Also seems to go on a placing block rampage too; Although right now I'm unable to place my finger on what causes it exactly!
Works great now! Cheers @grum - Should point out I've noticed a bug with this. Don't know if it's just me but after playing using Control + Click for a short while, The mouse suddenly goes insane on a left click (Destroy blocks) loop and the only way to clear it is trying to trigger ctrl or two finger clicking the pad. This happened about 4 times in a 15 min test. Could anyone else confirm this?
Whey! Cheers Grum!!
It's worth noting that downloading 1.5.2 using the new launcher into a new profile fixes the issue. If it's a major problem I'd stick with 1.5.2 until Mojang fixes the issues. I must admit though certain aspects of the new update are very sloppy. I tend to think the only thing Java has going for it is cross platform compatibility.
OK After playing for a while on another Mac I can confirm it's if you quickly add / delete blocks using CTRL in succession (If CTRL is triggered too quickly it can get stuck and the mouse click event loops)