OSX 10.6.5 problems with Mail.app & Skype

I've just upgraded from 10.4.11 to 10.6.3 (which I bought today from the Apple Store), then an online update to 10.6.5.
Software update doesn't find any more new updates, so the computer is as up-to-date as possible.

Since the online update to 10.6.5, I can't launch Mail anymore ("you can't use this version of Mail with this version of Mac OS X"). Mail is version 4.2 (1078/1082), OS is 10.6.5 (Build 10H574)

Also, Skype launches but doesn't connect to the web. (I've reinstalled the latest version of Skype)

All other internet services (Safari,... updating anti-virus software,...) works alright it seems. Just Mail & Skype are completely buggered.

Anyone got a solution / experienced the same problem?

I just tried reinstalling Mail from the 10.6.3 installation DVD via Pacifist. Same problem – Mail just won't launch.

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Thanks for understanding!

OK. Got mail working again after downloading the dmg file for 10.6.5 & reinstalling the system update a second time. Current Mail version on 10.6.5 is 4.4

Skype is down apparently: Skype Goes Down. Millions Impacted. Skype responds: Tech News «