SMW Result Formats Timeline: Data range < 1900 doesn't appear
many thanks for your note, at least it's a first indication! That date you're mentioning in your post does correlate to the date where the issue appears in my timeline.
However, I spoke to my web hoster and he confirmed that their environment is running on 64 Bit. When checking the phpinfo I saw that the System is a 64 Bit one (Linux dd6904 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59 UTC 2012 x86_64), but is this what you mean? Or did you mean that the php installation as such needs to be a 64 Bit version? The PHP API listed in phpinfo is "20041225" and PHP Extension is "20060613".
Many thanks for another hint =;-)
I believe both the OS and the php version would have to both be 64 bit, but it would be very odd to run 32 bit php on a 64bit host, so if the host is 64bit, there is a very good chance that the php version is 64 bit.
However, I'm at a loss as to how this could happen on a 64bit host...