I observed last week on Windows Updates that Vista SP 1 was available for installation. My question, should I install the update or not? Has anyone experienced or does anyone know of any reported issues associated with SP 1? What are the Pros and Cons of installing Vista SP 1?  I have Vista Ultimate installed on my computer and overall it has performed ok without any serious issues. Thanks. 

I didn't notice any adverse affects, but I did notice a substantial speed increase in moving/copying/deleting files.

I installed it yesterday with no issues - took a total of 50 minutes to install after download complete. Everything seems to be working fine and notice MS Money program closes much faster and seems to run faster. Have not re-booted or copied files yet so no real knowledge (although the fast Money close is probably a file copy issue).