I though I would throw this out there - we have experienced problems when applying SP4 for Windows 2000 on our Exchange 2000 server (another identically configured Exchange server was not affected by the SP4 update). After applying the SP, the server seemed to run fine but eventually ran out of memory (because of a suspected memory leak in a lower level component), the system slowed and the IS consumed nearly all CPU cycles. Removing the SP and rebooting the server brought it back to normal operation. This server had NO third party software (including no virus scanners) and was a Compaq DL580 with current drivers. The servers only function was as a mailbox server for 2,500 users. The Exchange service pack level was 3.
While PSS has no record of a similar problem in existing SRX's, I have found some evidence that the problem has been experienced by others: http://groups.google.com/groups?q=SP4+Windows+2000+Slow+Exchange&hl=en&lr=&ie=UTF-8&selm=d2f53307.0307111157.43fa3337%40posting.google.com&rnum=1 http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&threadm=523a01c3418d%2498339f60%24a401280a%40phx.gbl&rnum=7&prev=/groups%3Fq%3DSP4%2BWindows%2B2000%2BSlow%2BExchange%26hl%3Den%26lr%3D%26ie%3DUTF-8%26selm%3D523a01c3418d%252498339f60%2524a401280a%2540phx.gbl%26rnum%3D7 http://groups.google.com/groups?q=SP4+Windows+2000+Slow+Exchange+-5.5&start=10&hl=en&lr=&ie=UTF-8&selm=028301c34af2%244ad1a460%24a101280a%40phx.gbl&rnum=20 We currently have a support issue open with PSS (SRX030716601823) - feel free to reference this if you open your own case with PSS. If you have any other details please let me know. Thanks, david moore Chevron Phillips Chemical Messaging Group [EMAIL PROTECTED] 832-813-4222 _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]

