raman
2
Firsts the pagefile.sys is Windows swapfile and is necessary, but is no security risk.
RPC means “Remote Procedure Call”, Blaster(and others) uses this exploit for spreading. It was fix a long time ago, but there where several bugfixes for the bugfix!
Maybe i am wrong, but i think “Win32:RPCexploit” is a kind of heuristic/general detection. If you still have that file test it here: http://www.kaspersky.com/remoteviruschk.html