@Fullmetacoder: Try breaking this one, it should take no longer than a few minutes to do it even if I don't tell you what kind of cipher it uses. The message is an abstract from this site.

NZ ZPRZXI VRRAMXVIMDOH VOY XDCRDOZOIH IVTMOU RVGI MO ILZ XDOIZHI ID LVKZ HDCZ FDGC DF XDCRAZIZOZHH - OD ADDHZ ZOYH, HIJWH VOY ODI NDGTMOU CZILDYH. MF ILZ FMOVA XDCRDOZOI MH AMCMIZY XDCRVGZY ID NLVI LVH WZZO YZXAVGZY MO ILZ RGDEZXI, ZPIGV XDYZ MGGZAZKVOI ID ILZ FJOXIMDOVAMIQ NLMXL MH RGDKMYZY MO ILZ FMOVA HDAJIMDO LVH ID WZ GZCDKZY.

ILZ XDYZ IVTMOU RVGI MO ILZ XDCRZIMIMDO HLDJAY WZ NZAA YZHMUOZY. QDJ HLDJAY RVQ VIIZOIMDO ID XAZVO MOIZGFVXZH, XDYZ GZJHZ, UZOZGMX HDAJIMDOH, YZHMUO RVIIZGOH VOY VAA DILZG ILMOUH ILVI CVTZ QDJG RGDEZXI AZHH ZGGDG-RGDOZ VOY ZVHMZG ID CVMOIVMO.

NZ ZPRZXI ILZ VRRAMXVIMDO DG XDCRDOZOI ID WZ WVHZY DO BI IZXLODADUQ. AMCMIMOU ZPIZGOVA AMWGVGMZH VOY VRRAMXVIMDOH OZZYZY ID JHZ ILZ RGDUGVC MH VYKMHZY, NLZGZ VRRAMXVWAZ (M.Z. NZ YDO'I ZPRZXI VO MYZ ID WZ V FJAAQ HZAF-XDOIVMOZY VRRAMXVIMDO, WJI NZ ZPRZXI V IZPI ZYMIDG ID YMHRAVQ IZPI JHMOU BI XAVHHZH VOY ODI ILMGY RVGIQ XDCRDOZOIH).