It seems that the lockup seems to be a common problem after looking at the past posts. I purchased the unit refurbished last October (2005) and recently it started locking up when it goes into sleep mode. You can tell when it is locked up by just looking at the clock - it usually freezes and will not show the current time.
The past posts have frequently pointed to the wireless card as the culprit - so I have ordered a Belkin F5D6020 to see if it is the cause. I did factory reset the unit so it needed to download the latest firmware and instead of taking 20 minutes as stated it was close to an hour - maybe the card is not working properly.
I did some searching on the internet and found a list of PCMCIA cards that have the Prism chip set that has been mentioned in the past. I filtered the list so that the cards that have been verified as Linux compatible are listed first and the rest are using the Prism chip set but there is no information as to the Linux compatibility.
It may come in handy some day since the 802.11b cards are becoming hard to find. If anyone has used any of the listed cards in the I-Pronto maybe you can post a note with the make and model so it will be easier for someone needing a card in the future to select the good from the bad.
Actiontec802CI2Linux-wlan-ng older version Actiontec802UI3 USBLinux-wlan-ng older version ActiontecHWC01170-01Linux-wlan-ng AdaptecAWN 8030Linux-wlan-ng Tx power 18.5 dBm AddtronAWP-100Linux-wlan-ng AllnetALL0192Linux-wlan-ng AmbicomWL1100Linux-wlan-ng AsusWL-100Linux-wlan-ng BelkinF5D6020Linux-wlan-ng several versions BenQAWL-100Linux-wlan-ng BromaxBWE250-ILinux-wlan-ng now part of CyberTAN BuffaloWLI-PCM-L11Linux-wlan-ng also with ""GP' suffix" ConceptronicC11CLinux-wlan-ng Contec FlexscanFX-DDS110-PCC Linux-wlan-ng CoregaPCC-11,PCCA-11Linux-wlan-ng D-LinkDRC-650Linux-wlan-ng European version DynalinkL11HDTLinux-wlan-ng EpoxEWL-C11Linux-wlan-ng GemTekWL-311,613Linux-wlan-ng Hawking Tech.WE110PLinux-wlan-ng IntermecMobileLAN 11Linux-wlan-ng LeArterySYNCBYAIRLinux-wlan-ng LinksysWPC11Linux-wlan-ng Ver.4 is Realtek MicronetSP 905V2Linux-wlan-ng MicronetSP 905BDV2Linux-wlan-ng MicrosoftMN-520Linux-wlan-ng MiLANW1897Linux-wlan-ng rebranded Bromax WE250 NetgearMA 401Linux-wlan-ng NetgearMA 401RALinux-wlan-ng NokiaC110Linux-wlan-ng OTC WirelessAirEZY 2411-PCCLinux-wlan-ng OTC WirelessAPCC-202Linux-wlan-ng PlanexGW-NS110Linux-wlan-ng website claims phasing-out SamsungSWL-2000NLinux-wlan-ng Senao/EngeniusSL-2511CDLinux-wlan-ng Senao/EngeniusSL-2511CD PlusLinux-wlan-ng Siemens Speedstream1021Linux-wlan-ng SMC2632WLinux-wlan-ng SparklanWL-311FLinux-wlan-ng partnered with Gemtek US RoboticsUSR2410Linux-wlan-ng US RoboticsUSR 2445Linux-wlan-ng YDIUnknownLinux-wlan-ng Z-ComXI300Linux-wlan-ng Z-ComXI325Linux-wlan-ng with detachable antenna Zoom TelephonicsZoomAir 4100 Linux-wlan-ng Zyxel-ZyairB-100Linux-wlan-ng ManufacturerModelComment-2 1ST WaveWM-PCCARD-2Tx p ower 100 mW AbocomWB 1500SMMCX ext.antenna connect ers AbocomWB 1500SHHigh power w/ext.antenna connectors AbocomWB1500 AboveCableACPC2000 AcctonWN 3101Jparent company to SMC,A DMTek" AddtronAWP-101Linux-wlan-ng with antenna connector AirvastWN-100Swith adjustable external antennas AirvastWN-100 AirvastWN-110several varieties AlfaGWPC001E Allied TelesynAT-WR2411Tx power 18 dBm Allied TelesynAT-WCL452 AmbicomWL1100BTx power 13-20 dBm ArtemCC-STD-PC-b AsanteAL 1211-DPAsante website-""unsupported linux d