Hello microes,
This is Dominic L. from Applications Engineering at National Instruments. The long launch time for LabVIEW 8.0 was a big concern for many of our customers and has been resolved with LabVIEW 8.20. You may want to try a few of the options mentioned in the following link to reduce the launch time:
http://digital.ni.com/public.nsf/websearch/C478B9F22A3FB131862571EF0061CEAF?OpenDocument
Does LabVIEW still not respond if you let it load without clicking anything? It took forty seconds to open LabVIEW 8.0 on my computer. Maybe this issue is because of your computer configurations. What kind of computer do you have? How much RAM is there?
Did you uninstall LabVIEW 8.2? If not, remove LabVIEW 8.2 using add/remove programs from the control panel. Try this and see if it helps.
If the load time is a big issue then I would suggest upgrading to LabVIEW 8.2 if you can.
I hope this helps.
Have a great day!
Best Regards,
Dominic L.