ok, your first error relates to IE8 and .net framework, what version do you have currently rinning ?
If it's 2.0 please update to .net 3.0 wait for the install to finish and reboot.
After you did this please load up IE8 and load MSDN | Microsoft Development, Subscriptions, Resources, and More
for testing, if it bugs out again it is most likely a IE browser problem.
If you have not given IE8 any updates get it from windows update and it should download a newer version of IE8 or put you up for IE9.
Got an error today: EventType clr20r3, P1... - Elton's Ark - Site Home - MSDN Blogs
Read this a little bit and it will help explain some things.
lxdcamon.exe Windows process - What is it?
About your second problem, the lxdcamon.exe doesn't look right, it could be total file corruption or you might have a malware problem.
Download antimalware bytes, reboot into safe mode and have it do a full scan, if it picks any malware it will try to quarentine and get rid of the file once it has new malware and spyware definitons.
Be highly aware, if antimalware bytes cannot get rid of it, there will be another way to eliminate it but it will take patience and effort to restore your windows os.
If it comes to that, send me a pm and will get started first thing tomorrow.