I'm trying to free up some some disk space and found these... C:\Program Files\Lenovo\System Update\session\tvtrnr31_1022en\z180zab1022us00.tvt (140 MB) C:\Program Files\Lenovo\System Update\session\tvtrnr31_1022en\tvtrnr31_1022en.exe (222 MB) Is it safe to delete them? I think they're just install-...

This is my first Thinkpad, a 200763U. Ever since I got this machine I've noticed a "hot metal" smell periodically. I've had it now for about a month. The smell is faint, not overpowering. I notice it several times a day but then it goes away. Any ideas what it might be and what I should do about it?