SAP B1 8.8 client taking long time to connect

Dear all,

We have recently upgraded from SAP B1 2007B to SAP B1 8.8 PL8. SP B1 Client connects very well on server but when trying to connect from client machine it takes more than 10 minutes to connect. We have disabled firewall on server as well as all client machines. We have 3 clients each having OS Windows XP, Windows Vista and Windows 7.

Kindly assist with the same asap.

Thanks and Regards,

Pritesh Shah