Problem solved: The culprit turned out to be Symantec Endpoint Protection's Network Threat component (firewall). Disable that, and the failing Koha functions work normally. I was tripped up on this because I had disabled SEP days ago for testing. What I didn't know was that SEP re-enables itself when you reboot the computer. I can understand the reason for that, but it caused me some serious head-scratching before I discovered what was happening. For now, we will disable SEP's firewall for testing. Long term, we will look for a different AV product. Steve Campbell Trustee, Converse Free Library, Lyme, New Hampshire, US On Mar 11, 2012, at 2:02 PM, Paul wrote:
At 01:16 PM 3/11/2012 -0400, Steve Campbell wrote:
Our small public library is learning Koha on a test system hosted by Bywater. [snip] These functions fail most of the time, but occasionally one will succeed. They fail only on these two machines. They fail whether you are using IE or Firefox. A public XP computer (HP with AMD processor) with the same versions of XP and the browsers never fails; our Lenovo Windows 7 all-in-ones never fail. Our Macs never fail. [snip]
Can you access the Apache logs on your test system? If so, what do they say? If you can't, please ask Bywater.
Best - Paul