[ILUG-BOM] performance hit for LAMP server

We are facing a peculiar problem. I'm providing as much details as I can. Even so, tell me if I should provide more info. LAMP server before install - RHEL 3 with Apache 2, PHP 4, MySQL 4. After install - RHEL 5, Apache 2.2.3, PHP 5.1.6, MySQL 5.0.2 The problem we are facing is the site performing badly when accessed from certain locations - from our corporate LAN, which is behind Squid. Certain colleagues in other companies (we suspect behind they are also behind Squid or some proxy) also reported with gemeric messages like "site isn't loading". Some symptoms are: 1. Images, CSS, JS files not loading or loading incompletely. 2. If we view source, we see the HTML is fully downloaded, but not rendered. 2. PHP pages being asked to be saved (the saved pages are blank) This problem is prominently noticeable in PHPMyAdmin. 3. The performance improves 9may be illusion) over time, but any new drastic changes brings it to square one. 4. Awstats page takes forever to load comletely. 5. Sometimes the sites are inaccessible in toto. 6. Files not downloading through FTP (even 200K fails). The perplexing thing is I and my colleague have accessed the server from home (Triband and cable net respectively) and everything works! We don't know what the problem is, where it is, etc. Any ideas? -- Rohit V. Bhute http://rvbhute.org/