[Viewsonic ViewPad 7 & Variants] Letitride:
Thanks for clarifying and I looked at the YT video again - perhaps you would be better off getting Viewsonic for authorization to return for repair or exchange it. On my device, the screen is responsive 98% of the time but I do realize that sometimes, when we're playing Angry Birds, that it too doesn't always readily respond to commands or launch the bird shots .... Not a big deal for games, it will usually get going again - worst case, use the Go Back key & restart the level - I figure that it could be a combination of the Froyo or Android codes written for the OS and/or along with the Angry Birds gaming itself.

Afterall, my "regular" & 2 years old smartphone, HTC Eris running a nearly identical CPU & configuration is running custom rooted GingerBread ROM - and, is must better & responsive in overclocked mode. The Vpad7 will not, I feel, be running Honeycomb but let's hope that some of the veteran xda developers will soon release a working GingerBread ROM - perhaps it will fix many of the issues across the field, so to speak. (or, if Viewsonic will release it as official update .... wishful thinking, huh - but !)

On the wifi issues, have you tried doing the SuperOneClick and/or GingerBreak apk to root, and then flash TJ_Style's custom FM6 ROM - http://xdaforums.com/showthread.php?t=1264647 - this OC version with WiFi fix might work for you without any mods (patching or zip flashing the 2.2.2 boot.img)

On wifi configuration itself, is this happening with different routers - "older" G mode or newer N (faster) routers, unsecured or open network or secured (WEP, WPA or WPA2, etc.) - any issues on the host computer/router's firewall blocking ? Can you log in at a public hotspot or cafe like Starbuck ?

Go into Settings > Wireless & network settings > Wi-Fi settings > and, then, tap the Home key (the bottom of 4 keys on the device - held in landscape mode) and you should see "Scan" & "Advanced" - does it pickup a decent signal ? Click "Advanced" & look at your "Wi-Fi sleep policy" - mine is checked for "When screen turn off" - tried "Never" or "Never when plugged in" - any difference ? If you get this far, you might want to try to set up & Use "static IP" instead of using dynamic ip addressing that these devices usually count on .... it's a bit of work, but might help to "zoom" into your own router only.

I use "Wifi Analyzer" v2.5.13 from Kevin Yuan (Google Market) to help scan the spectrum for signals and possible interference, which sometimes do happen - and moved 1 of our 2 cable broadband router to a different channel so that all of our wireless (up to 15 of them, yes) devices around the house can easily connect to the hotspots. (Reading posts @ other forum sites & ran my inSSIDer v2.0 from Dell laptop for baseline, it scanned 17 active APN's with varying signal strengths, our Sony W995 picked up only 6 signals with 3 good ones, the HTC Eris picked up 6 signals also with 3 good ones, and the Vpad7 only 3 signals, 2 of them from our own indoor G & N routers plus 1 from neighbors that's marginal. It's safe to assume that our device's internal radio receiver or Baseband isn't very good with reception to begin with - you might need to flash a different "build" like mine to give it a try - and try switching your wifi channel.)

Just some of my thoughts on the wifi problem as I do run into signal problems myself every so often installing a new device or configure a guest's new gadget at home. If all else failed and along with the touchscreen problem, then I would say get it fixed via repair or exchange from Viewsonic, and then .... (a few weeks later, upon its return to you - happy rooting & flashing, etc.)