This definitely is an issue, however it is a bit hard for us to advice further since we need to reproduce the problem first, and it really depends on your custom code for selecting the whole column on clicking a cell.
I believe the fastest way to go from this point is to contact our dedicated Developer Support team directly, with a small subset of your project reproducing the issue - this way it will be much easier for them to figure out what is going on and hopefully advice better. Developer Support can be contacted via this link:
http://devcenter.infragistics.com/Protected/SubmitSupportIssue.aspx
Btw, are you by any chance using IE8 Beta? A search on the forums for "igtbl_StateChange.base.init" gets just one match
http://forums.infragistics.com/forums/p/13751/50742.aspx
and there IE8 is mentioned...