hi , I installed 2.6.13 over the weekend on a dual Pentium Xeon 2.4 Ghz with 6 GB RAM (My fileserver) running Debian Sarge. My fileserver uses external infrotrend raid . On switching to 2.6.13 I also switched from my older slower Symbios 53c895 to Adaptec 3960D I have noticed when using the adaptec card my file server performs slower than the Symbios card. As an example I tried to copy my Mail folder of 66.8 M and this is what I see . with symbios 53c895 bash-2.05$ time cp -pa Mail Mail.mips real 0m6.048s user 0m0.007s sys 0m0.295s with adaptec 3960D bash-2.05$ time cp -pa Mail Mail.mips real 0m49.543s user 0m0.000s sys 0m0.044s I wonder anybody is experiencing this . Thanks yogesh - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html