It would help if you explained what the trace flag does... 818 enables some code which could help with the detection of stale reads. You could also try trace flag 806, which will do page auditing whenever a page is read from disk. This can be useful when page checksums aren't enabled (i.e. tempdb in SQL 2005 where page checksums cannot be turned on).

Thanks

PS Beware that enabling these in production will slow down your workload - possibly quite a bit.