Bug#591286: libapr1: upgrade breaks apache

[Adrian Bridgett <adrian@smop.co.uk>]

Package: libapr1
Version: 1.2.12-5+lenny2
Severity: grave

I used to have "SSLMutex sem" however testing an upgrade today this
breaks with:
[Sun Aug 01 19:09:36 2010] [error] (70023)This function has not been
implemented on this platform: Cannot create SSLMutex
Configuration Failed

The apache mod_ssl manual says that it should "pick the best semaphore
implementation available".  Trying posixsem fails but sysvsem works so
it should be using that (another bug really). 

However, if I downgrade _just_ libapr1 to 1.2.12-5+lenny1 then
posixsem (and sem) work just fine.

Looking at the changelog, this could be nasty :-(

Thanks,

Adrian
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