Among others I see in Mysq:
Handler_read_rnd 665 k The number of requests to read a row based on a fixed position. This is high if you are doing a lot of queries that require sorting of the result. You probably have a lot of queries that require MySQL to scan whole tables or you have joins that don't use keys properly.
Handler_read_rnd_next 8 M The number of requests to read the next row in the data file. This is high if you are doing a lot of table scans. Generally this suggests that your tables are not properly indexed or that your queries are not written to take advantage of the indexes you have.
Im pretty much using the default install. So I guess more people have these ones in their MySQL reports.
Is there an index i can sdd somewhere to lowere these warnings?