slow network in XP

i just downloaded the SP2 upgrade for Windows XP Pro, and now it takes tthree times as long to load files from off the network.  i don't want to upgrade teh other computers if it will just make my network fail.

has anyone eles had this problem, and is there any way i can fix it?

Blame Samba.

http://blogs.msdn.com/oldnewthing/archive/2006/03/30/564809.aspx

http://blogs.msdn.com/oldnewthing/archive/2007/02/01/1573160.aspx

Windows filesharing would be way faster if it weren't for them.