It's probably because Go Daddy is quering the Registry's WHOIS. If the WHOIS
of the Registry says the domain name is locked, it'll stay that way until:
1) they receive the update from the current registrar, and 2) they update the
WHOIS database reflecting the change.
Assuming you submitted your ticket to NetSol and it's been 36 hours, chances
are the name is no longer locked. Go to
http://registrar.verisign-grs.com/whois,
search the domain in their WHOIS, and look under status to see if it's active.
If it's saying active, restart the transfer. It's a .com, though, right?
If it's not a .com, check the registry of that extension.