I can't see the memory_limit in your phpinfo. So please make sure that this is high enough. On a dedicated server you certainly can spare 64MB or hopefully more for PHP (the default is 8MB wich is often not enough for EZ).
Also check out the tips and tricks here: http://ez.no/community/forum/setup_design/improving_ez_publish_environment_and_performance
And check your cache settings - you can improve the speed quite considerably there. Especiallly make sure that the translation cache is enabled.
Also enable full debug output and check the timing points there - anything obvious?
The messages in the warning.log are exactly because the translation.ts is not complete. Somewhere in the templates i18n is called for a certain text and there is no translation in the translation.ts. This should not cause such big problems however so I am not sure what could cause the problem with the translation.ts. Does the general translation work fine? If not, check the tips in the forum first so speed up your EZ as much possible before worrying about extensions. If yes maybe replace your custom translation.ts in the extension with the one that is provided by ez. If this works now your custom translation.ts seems to be faulty so check that.
