Is this issue already resolved?
Yes, they moved the affected websites to new servers.
Was it a JDB or iframe exploit or what? Really amazed to see such a big network getting compromised however its true that nothing is secure.
Ars has a decent writeup:
http://arstechnica.com/security/2013/10/...h-malware/
Quote:Thursday's compromise caused some php.net visitors to download "Tepfer," a trojan spawned by the Magnitude Exploit Kit. [...] An analysis of the pcap file suggests the malware attack worked by exploiting a vulnerability in Adobe Flash, although it's possible that some victims were targeted by attacks that exploited Java, Internet Explorer
I visited it quite a number of times, however I have a Chrome script blocker. I don't believe I would have got infected.
How can I check if my computer got infected? As far as I remember I visted this them a copule of days ago
Run it with a good antivirus. Only about 5 of the major 47 (or whatever) picked up the relevant virus.