wow, i really appreciate your super-quick responses! 
you have all pretty much confirmed my suspicion that something else is leeching my memory or otherwise causing memory/reporting issues. the only reason i posed the question here is because things were not reporting this weird escalating increase in RAM Usage before i installed all the Stardock software. & my typical RAM Usage was reporting at ~2%-10% just like my CPU Load (which is still reporting these levels), no matter what i was throwing at it.. But that's not to say I wasn't messing around with other stuff around the same time, heh... So yea it could very well be any number of things that are totally unrelated to Stardock altogether.
Now my FF (v3.0.8 btw..) is reporting around 109,000 K with only 4 simple tabs going - before i think i had a couple media-related sites (online episodes, etc.) and other junk open.. but even at 109,000 K, that is only around 109MB, right? which should be a drop in the hat for 6GB of decent DDR3 Memory...
...
So yea if you can't really, or just don't wanna get into further advice about this minor mystery since its quite likely not related to Stardock stuff at all, that's cool.. but would greatly appreciate any further tips to help troubleshoot/isolate this sudden anomaly! I am about to try some memory diagnostics, but seriously ive run MemTest86+ for nearly an entire day, Prime95 Blend Tests for the same length of time, and was not having these readings til recently. There isnt that much stuff running on my computer constantly, mebbe WinAmp or an open MediaPlayer that stays idle while im afk... and aside from FF (v3.0.8), Windows Sidebar, Impulse, DesktopX, DeskScapes Animated Desktops, and other real light background things, there is really nothing else running while im experiencing this issue. Do you think it could be a "memory leak"?
...As for svchost... there are 12 instances of svchost running concurrently, but that is normal right? just the one that's being a RAM hog is what you're asking about, yea? That one has:
wudfsvc Windows Driver Foundation - User-Mode Driver Framework
WPDBusEnum Portable Device Enumerator Service
WdlSystemHost Diagnostic System Host
UxSms Desktop Window Manager Session Manager
TrkWks Distributed Link Tracking Client
Tablet Input Service Tablet PC Input Service
SysMain SuperFetch
PcaSvc Program Compatibility System Service
NetMan Network Connections
HID Serv Human Interface Device Access
EMDMgmt ReadyBoost
AudioEndptBldr Windows Audio Endpoint Builder
Other than that, I'l try looking into any possible services to disable or set to manual. Seriously, thanks again for your help!!