ToolbarUpdaterService.exe seems off to me. You have malware and other shit going on (edit: Google ToolbarUpdaterService.exe). It can get complicated, I would start with a Malwarebytes scan, and scan with Spybot. Once you remove some of it, restart, and do it over again. If it's preventing either of those programs from running, you will need to try safe mode. If it still fails in safe mode, then you have to do some registry digging, but you have to know what you're looking for (Winlogon - I have seen userinit hijacked to run a virus, then run the actual userinit.exe to log you in normally, why it bypassed safe mode). There are some that also hijack how the operating system is set up to run exe files (it will run a virus, then the application, bypasses safe mode also).
Svchost.exe is eating a bunch of memory, but it's a service that's being manipulated poorly at best. They're not freeing something which is causing a memory leak.
Run netstat -a -b at command prompt, you can narrow down connections that are currently open that seem suspicious to make sure that you're not leaking data and information to a third party. Start without touching the internet so that any connections kept alive aren't making the list bigger than what it needs to be.