Hi All,
Lohit Nepali was not working well in Nepali locale due to some broken rules. From wikimedia list http://imagebin.org/204475 more detail is available at http://lists.wikimedia.org/pipermail/wikimediaindia-l/2012-March/007677.html
I have resolved this issue and released 2.5.1.1 of Lohit Nepali fonts. Available to download from https://fedorahosted.org/lohit/
Regards, Pravin Satpute