2.6.28.10 is a kernel. The 2.6.28.10 has been tested via the Phoronix Test Suite in the configurations listed below.
mercury-lzma - Tests on Debian 5.0.6, ARMv7 rev 3, Nokia RX-51
kernel default - Tests on Ubuntu 9.04, Intel Pentium 4 3.00GHz, GeForce 7300 LE, HP Pavilion 061 RA944AA-ABZ t3510.it
nicola-24897-15832-17210 - Tests on LinuxMint 7, Intel Atom 330, Intel 82945G, Intel D945GCLF2
nicola-11559-13953-25668 - Tests on LinuxMint 7, Intel Atom 330, Intel 82945G, Intel D945GCLF2
P-IH - Tests on Ubuntu 9.04, AMD Athlon II X4 620, GeForce 8600 GTS, Gigabyte . GA-MA770-UD3
kernel_nuovo - Tests on LinuxMint 7, AMD Phenom 8550 Triple-Core, ATI Radeon HD 4350, Acer Aspire X3200
morph - Tests on Ubuntu 9.04, Debian testing, Intel Core 2 Duo E6750, GeForce GTS 250, MSI MS-7350, Intel Core i7 920, ATI Radeon HD 4800, ASUS Rampage II Extreme
morph - Tests on Ubuntu 9.04, Intel Core 2 Duo E6750, GeForce GTS 250, MSI MS-7350
ffmpeg_mykern - Tests on Ubuntu 9.04, AMD Sempron 3200, GeForce 6100 nForce 405, AM2NF6G-VSTA
gnupg_mykernel - Tests on Ubuntu 9.04, AMD Sempron 3200, GeForce 6100 nForce 405, AM2NF6G-VSTA
kertest - Tests on Ubuntu 9.04, Intel Core 2 Duo P8700, G96, ASUS F50SV, GeForce GT 120M
xfc-250 / intel i5 - Tests on Ubuntu 9.04, Intel Core i5 750, GeForce GTS 250, Gigabyte P55-UD3P
intel i5 3.2 ghz - Tests on Ubuntu 9.04, Intel Core i5 750, GeForce GTS 250, Gigabyte P55-UD3P