I've noticed weird issue when sometimes (quite randomly), Drupal is showing node with fields from... different node.
For example I'm displaying node with ID 1, but all fields (except from the title) are displayed from node ID 3. It leads to weird situation when article displays content of... another article. Clearing cache repaired broken articles. But after some time I'm finding similar issue with different articles and I need to clear cache again to fix it.
Did anyone encounter problem like this? I'm not sure if it's bug in Drupal core or it might be actually in Views module. Or maybe it's related to cache (I'm using Memcache). Problem is hard to reproduce - I couldn't notice any specific conditions when it occurs. Only once in a while I'm finding couple of articles with mixed content.
I'd be grateful for ideas (or maybe solution ;) ). Of course, suggestions how to investigate this further will be much appreciated.