Well, I do check!
a)The version 1.10 (on extras-devel/extras-testing) is, for sure, safer than 0.9

b)I currently use 4 widgets on my desktop and no lockups so far, suggesting that maybe the commands themselves are the problem.

c) Queen Beecon Widget is quite safer (albeit more bloated) since it executes commands asynchronously and is under current development.