Venue Pro 11 vPro 7139 problems

So I've been meaning to post this for a while now, but have been busy with work.  I have a vPro 7139 model and lately it has been acting more and more sluggish and I've noticed the following issues.  

-The fan runs constantly, regardless of what I'm doing, any remotely fancy web page is extremely choppy, for example www.gamespot.com.  
-Streaming videos are frustratingly choppy, and I know that bandwidth is not an issue, nor are drivers.  
-All drivers are updated to the most current settings.
-Last month I had a replacement dock arrive with what seems to be a decline in performance.  
-My USB mouse constantly disconnects and reconnects.  
-Even with the newest stylus model, fresh batteries, and current firmware, the stylus works maybe 50% of the time.

Overall, it just seems that the performance of the tablet has decreased in the past few months.  To be honest, the thing that has kept me going is the communication and service that Dell has provided through these forums (I'm looking at you Brian, you're really my beacon of hope...).  The frustrating part is just how the product hasn't seemed to live up to what I felt it should be able to do.  

Are any of these problems regularly occurring and if so, are fixes in the pipeline?  I really want to support this product, but I'm getting so discouraged lately.