So I cancelled the installation and head through metalink. After a few searches I first tried to remove / comment
row from sqlnet.ora file. (Note
Then I found another note(Note
I hit google search and find that forum post, thankfully..
http://forums.oracle.com/forums/thread.jspa?threadID=317706 (merope is me at that page :))
Finally, changing the Regional settings of the server solved the problem. To change it, navigate to control panel, regional settings and change the language to US English in the regional options tab..