I am working on new wordpress site where I thought why not to implement some caching system before my shared hosting provider raise fingers on my site because of load issue. So I installed this W3 total cache plugin but I installed and configured after that I found my site is all broken.
checked into further and then realised that CSS and Cache minification is not working, and showing error of "Bad file Param" .
Because I have made lots of custom changes, site looks little problamtic as making lots of query .. I will optimize queries too but looks like if W3 total cache works, it will solve all problem.