Logs look clean. The C:\pagefile.sys could not be opened is normal. If a file is used by the operating system, an another application, or password protected - AntiVir can't open it. This behaviour is normal and not dangerous. It is normal for AntiVir to give this warning. It's your paging file or virtual memory. It compliments your RAM by using hard drive space as more memory, it was in use so it cannot be opened.
Judy