Da quando l'avevo installato spesso avevo dei problemi con questa versione del software, ovvero spesso si inchiodava in maniera irreparabile, magari sta capitando anche a qualcuno di voi. Ho scaricato quindi l'aggiornamento alla versione 5.6.0a e il problema è stato risolto.
La Davis promette che questo aggiornamento risolve altri piccoli bug.

Scaricatelo direttamente da qui: http://www.davisnet.com/support/weat...stall_560a.exe

Questi i miglioramenti apportati:

Version 5.6.0 Bugs Fixed
1. Fixes a bug in the plots that caused the time to display improperly.
Version 5.6.0 Features
1. Support for configuring VP2 repeaters.
2. Display repeater battery status.
3. Changed layout of the Alarm & Battery Status window
4. Ability to separately clear Day, Month, or Year High and Low data in the Clear dialog. Still does not allow individual sensor high/low values to be cleared.
5. If the Bulletin, Summary, etc. window is open when an APRS upload is scheduled, then additional wind parameters are included in the APRS data packet. The new data is user selectable between a 1 minute average speed with a 5 minute high speed, or a 2 minute average speed with a 10 minute high speed.
6. A table of wind speed data is displayed in the Summary window with Average and High wind speeds over the last 1, 2, 5, and 10 minutes.
7. New HTML tags for Weather Forecast, Moon Phase, Average Wind Speeds (1, 2, 5, & 10 min), High Wind Speed (1, 2, 5, & 10 min),
8. Inside Dewpoint and Inside Heat Index are calculated and shown in the Browser, Plot, and Summary windows. See the instructions below to enable this feature in existing weather station databases.
9. In the Browser window, "Rain" is renamed "Total Rain" and "ET" is renamed "Total ET" See the instructions below to enable this change in existing weather station databases.
10. Following international reporting standards, current wind direction readings of due north in the Bulletin, Summary, HTML templates, and APRS data packets, is reported as 360 instead of 0.
11. FTP uploads attempt to reset the FTP connection on the first failure, and skips uploading the rest of the files on a second (consecutive) failure.
12. Modified Wind Chill calculations between 40 F (4.4 C) and 93 F (33.9 C) to give more "intuitive" readings for temperatures above the upper limit of the official wind chill formula (which is 40 F). The result of this modification is lower wind chill values in the above temperature range than using the official formula.
12. Slight change in the Bulletin Layout for VP Plus
13. 8 update profiles are available in the Internet upload feature for increased flexibility.
14. Internet Proxy settings are available in the Internet Configuration dialog.
15. Extend range of Air Density measurement value below 0 C (32 F) and above 49 C (120 F).
16. Added the ability to reset the timestamp of the last data uploaded to Weather Underground, if the Weather Underground module is installed.
17. New USB drivers that can be installed automatically when WeatherLink is installed.
18. Add a Mediterranean forecast zone between 30 N to 45 N and 10 W to 45 E.
19. Updated the default APRS server to arizona.aprs2.net and updated the default password to reflect the WeatherLink version number.
20. Fixed some issues with uploading to Weather Underground.