With the release of Service Pack 2 for Windows XP, some people may be concerned about how this effects their Crystal Reports applications. According to the Business Objects website, Business Objects officially states that Crystal Reports is not supported for SP2. It is recommended that you do not install SP2 for machines running Crystal Reports. That being said, it appears that most installations haven't really run into problems. I've searched the newsgroups/forums and have only seen a couple posts relating to SP2 problems. In general, if you do install SP2 on a machine with Crystal Reports (even though Business Objects does not support this), then the best thing to do is to turn off the personal firewall. The personal firewall can cause the most problems and should be disabled.
HTH,
Brian Bischof