There are reported issues with the weeather in the latest Impulse beta build. Stick with SDC for the moment.
Zubaz, Jim wasn't asking about Impulse versions. He was, and is, asking about ObjectDock Plus versions. He mentions that Impulse is telling him that there is a new version of ObjectDock Plus, as compared to what is installed on his system, available. He then asks about the stability of this OD+ version and whether he should update to it or not. Please make sure you read and understand someone's post before you respond to. It seems to me you glanced through the guys post and answered what you assumed he was asking.
Now to Jim's questions. I'm afraid I can't vouch for which version Jim should use, except to say that I'm using v1.90 Build 535u myself and it seems pretty stable and reliable on my Vista 32bit SP1 system. A comment on the verrsion numbers Jim mentions, I would have thought that version 1.90.033 was 'older' than version 1.90.535 (the last three digits usually denote the Build number I believe).
I would advise the old adage of "If its not broke, don't change it!" So Jim I suggest you stay with what you have for now and ignore what Impluse is telling you.
HTH,
Jonathan.