Sun Ultra 20 Workstation - working very slow

Dear sir,

I have got 20 nos of Sun Ultra 20 Workstations, with AMD opteron 64 bit processors.i have installed Windows XP 64 bit o/s where in all the systems are facing the identical problems. it is that the system are working very slow. The users are using Autocad like Designing Software and while working for quite a little time and if the users saves the current documen or the file, the system gets hanged up.

I have the System BIOS version number : 2.1.7. but i found in the site that there is a latest update is available for the same. i am downloading it now. eventhough i am trying pls provide me a better solution as Soon as possible

[663 byte] By [KGTESCO_TECH] at [2007-11-26 8:41:21]