I have not come across any known issues in LabVIEW 2009 such as the one you describe. I would try loading the palettes during launch and then checking if you still observe this behavior. You can choose to load palettes during launch by going to Tools >> Options... in the 'Controls/Functions Palettes'.
What are the specs of the PC you are using (RAM, hard disk space)? What OS runs on it? If the problem still remains, this information may be useful.
Please post what you observe.
Load palletes during launch. It will cost you time when booting and (on rare occasions) I've seen my LabVIEW crash during this step on boot. (I think some of my companies other apps cause the trouble - cuz I NEVER get this at home)
Still- if somethings in the way, and you go "unresponsive" loading a pallate, Its much less of a headache for it to happen BEFORE you've modified any VIs.
I have Load Panels at Launch set and haven't had any problems, other than that it causes LabVIEW to launch slowly.
This is a very important setting if you want to take full advantage of QuickDrop, because that saves QuickDrop from having to load all the palettes the first time it loads, which kills your productivity. And if you aren't using QuickDrop, you're coding too slowly! 🙂