[opencms-dev] Files with extension "rar"

[maria.freixes_graells at alcatel.es]

Hello people!!

We've trying with several kind of files, and with one with an extension 
.tar is working well, you can open or download it, but if we try with 
one that has extension .rar, a window is open with:

Rar!ϐs ͙t??B&??K ??U\?43 
TestBedP25M20060523111127.log?`r? 

ѐ͕QLս??oർۏWzˇ'??Vi!?i+?Y?Ӵ?ݯ^IWg?(??J??ˌ簷ƀa??Ϟ? 

??୻7མ???҄܄Ց4I?וF?ZZ?]??Q?b?bb??5Tk?f"b"b?JZߣ??ɉ?ģS?̣??T??m?h?ս?괞? 
?? ƀ?Ӵ?g?Ƴ??sJ"|?F5?LLJχ?Ć濓?㇊ŎRs|vv7wXߛ??O??6=?[| /Ს?k?y+֩￞ֿ??诵? 
WP�?3m?e8맷?????)??W𧪱ܵâקC???6h*⠳򭡋.???_Ꭿ???? 
P?R?U?[ˠŚ˒wUĩ֪ġDPԛ㤘M???ŧ I�h?G??vx7?1??γ.69>A晓Ć纒}????? 
[???sf?侺4뱦??J?찅Zֺ>??猡J? n>N,"^?c??曘ڛ↙мW̟?h.?ٙ?v?Ԍ?ǎǖƴD? 
Ϫ?ώ?;?*ϩ???剽ة?jៃ�

Any idea?

Many thanks!!!