I have had this happen a couple times - so I thought I'd ask around.
Running 2.6.3 121-378 on MBP 10.7.4
I have a file (just one of hundreds) on which code-analysis is completely messed up. The little code-analysis 'eye' never goes away, and pretty much anything I write gets flagged as a mis-spelling, or a python language error (i.e. lots of red on the right margin).
I have 'invalidated caches' and restarted. Every time I restart - all the bad flags go away - but again the analysis 'eye' never goes away and as I start typing it starts flagging things.
Last time I solved this by creating a brand new project and starting over - so it seems that some cache or something has gotten corrupt.
Any ideas?idea.log (969KB)