Andre kan, men bare ikke mig

http://www.i2integration.com/isz/010102-100603.pdf, denne side vil jeg gerne ind på men jeg kan ikke jeg får bare denne fejlmeddelse frem:
T
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Hvis jeg spørger nogle af mine kammerater kan de fleste komme ind på siden og downloade filen (ca 2mb), mens nogle få ikke kan.

Hvad kan det skyldes og hvad kan jeg gøre for at udbedre fejlen.
Jeg har acrobate reader installeret, samt XP pro med SP2.....