QNetworkAccessManager::get (in QSslSocket::defaultCiphers) crashes on some (extremely rarely) user Mac OS X machines with Mac OS 10.8. Qt frameworks are compiled in 10.6.5

Process: %APP_NAME%[12499]
Path: /Volumes/VOLUME/*/%APP_NAME%.app/Contents/MacOS/%APP_NAME%
Identifier: com.%APP_NAME%
Version: 1.1.0 (???)
Code Type: X86 (Native)
Parent Process: launchd [158]
User ID: 501

Date/Time: 2013-08-21 07:20:24.413 +0200
OS Version: Mac OS X 10.8.4 (12E55)
Report Version: 10

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000

Dyld Error Message:
Symbol not found: _EVP_idea_cbc
Referenced from: /usr/local/lib/libssl.0.9.8.dylib
Expected in: /usr/lib/libcrypto.0.9.8.dylib

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 dyld 0x8fead0b5 dyld_fatal_error + 1
1 dyld 0x8feaff36 dyld::bindLazySymbol(mach_header const*, unsigned long*) + 72
2 dyld 0x8fec0dbe stub_binding_helper_interface2 + 20
3 libssl.0.9.8.dylib 0x062f35e0 SSL_library_init + 48
4 QtNetwork 0x00f2c44b QSslSocket::defaultCiphers() + 7691
5 QtNetwork 0x00f2d57b QSslSocket::defaultCiphers() + 12091
6 QtNetwork 0x00f297a7 QSslSocket::QSslSocket(QObject*) + 1975
7 QtNetwork 0x00f1fe52 QSslConfiguration::defaultConfiguration() + 18
8 QtNetwork 0x00eb27a6 QNetworkRequest::sslConfiguration() const + 86
9 QtNetwork 0x00e99ffa QNetworkAccessManager::createRequest(QNetworkAccessManager::Operation, QNetworkRequest const&, QIODevice*) + 1082
10 QtNetwork 0x00e97089 QNetworkAccessManager::get(QNetworkRequest const&) + 41
11 com.%APP_NAME% 0x0000b3c9 QHttpTextFileDownloader::download() + 73

Similar situlations (qt apps as well):
http://musescore.org/en/node/16030
http://hintsforums.macworld.com/showthread.php?p=688845
https://www.google.com/search?q=_EVP_idea_cbc&oq=_EVP_idea_cbc&aqs=chrome.0.57j60l2j0l3.257j0&sourceid=chrome&ie=UTF-8

That's all I have at the moment.