Hello Claudio,
LACP is listed in C2960 datasheet
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/product_data_sheet0900aecd80322c0c.html
However,
C2960 configuration guide says:
>>The EtherChannel provides full-duplex bandwidth up to 800 Mbps (Fast EtherChannel) or 8 Gbps (Gigabit EtherChannel) between your switch and another switch or host.
http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_25_fx/configuration/guide/swethchl.html
So I'm not sure that the C2960 does not support bundling of the 10GE uplink ports.
http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_25_fx/configuration/guide/swintro.html#wp1062296
>>
EtherChannel for enhanced fault tolerance and for providing up to 8 Gbps (Gigabit EtherChannel) or 800 Mbps (Fast EtherChannel) full-duplex bandwidth among switches, routers, and servers
I would say bundling of the 10GE uplinks is not supported
Hope to help
Giuseppe